Citing a dissertation is normal in a thesis — and still the place where bibliographies most often slip between thesis, book, and grey literature. You have a doctoral thesis from ZORA, OPUS, or the ETH Research Collection, maybe a master’s thesis from the departmental shelf, and Zotero turned it into something of type Thesis or Book. Examiners see in thirty seconds whether you can tell a published university thesis from an unpublished bachelor’s thesis. This piece separates the cases, gives templates for APA 7, Harvard, and German footnote style, and tells you when citing a bachelor’s thesis or citing a master’s thesis as a source simply does not hold.
The examples below are made up and only there for the form — a Keller dissertation in Zurich, a Meier monograph after the defence, a Hofmann bachelor’s thesis at a university of applied sciences. Take the structure, not the names.
What you are actually citing: a university thesis, not “some PDF”
A dissertation (doctoral thesis) is an examination piece and, at most DACH universities, a publication duty. That is why you find it in repositories, in the German National Library, often with a handle or DOI. That is what makes it citable: someone outside your seminar can find the text again.
Three things students mix up:
- Dissertation / doctoral thesis. Usually citable once it is recorded as a university thesis — even when no trade publisher sits behind it. That is the core of citing qualifying theses when the qualification is a doctorate.
- Habilitation. Same logic: university thesis, often later a book. Cite the state you actually read.
- Bachelor’s and master’s theses. Examination pieces, usually without a duty to publish. Many stay internal. This is the case departments restrict or ban.
The catalogue record often says Hochschulschrift (university thesis). The word says nothing about quality, only about the publication path. An unpublished dissertation with no repository record is rare; an unpublished bachelor’s thesis is the default. Format both the same way and you signal that you missed the difference.
Unpublished dissertations without a publisher count as grey literature — citable, but with a status label. The book edition is white literature: ISBN, publisher, often a revised text.
If you are unsure which system your department wants — parentheses or footnotes, APA or Harvard — the mapping is in the citation-styles comparison. The detail rules for the two most common author–date systems are in the guides to APA 7 and Harvard referencing.
Published, unpublished, “it is in the repository”
Published here does not mean “it has a trade-press spine”. It means a third party can find the text through a stable record. That includes:
- the university bibliography plus full text in the repository (ZORA, OPUS, ETH Research Collection, Phaidra, eDoc);
- a record in the German National Library (DNB), often with a URN;
- a DOI that resolves to exactly this version;
- the later book edition with a publisher (then you cite the book — see below).
Unpublished means: no public record, or only a catalogue line with no text. Typical for bachelor’s theses and many master’s theses; rare for dissertations after mandatory deposit.
The in-between case that wrecks reference lists: the thesis has been deposited, sits in the repository, but has no trade publisher. That is not an unpublished source. That is a published university thesis without commercial distribution. APA 7 then does not write [Unpublished doctoral dissertation]; it writes [Doctoral dissertation, University] plus repository or DOI.
Three questions before you type the entry:
- Can someone outside your seminar find the full text — through a DOI, handle, URN, or a durable repository link?
- Is this the version you read, or already the book edition?
- Does the landing page show an embargo?
If (1) is no, in most fields you do not cite it. If (2) is the book, the thesis label comes off. If (3) is yes, the full text is off limits.
When a bachelor’s or master’s thesis is a source — and when it is not
Citing a bachelor’s thesis and citing a master’s thesis are the queries this article often has to answer. The honest answer is uncomfortable: in most fields, unpublished BA/MA theses are not a load-bearing reference for a central claim.
They may (sometimes) go in the list when all three hold:
- your style sheet or supervisor explicitly allows qualifying theses below the doctorate;
- the thesis is findable for a third party — repository, library record with a shelfmark, not “a classmate’s PDF”;
- you are not hanging a core thesis on it, only something local: a method used at that exact university, a case study that exists nowhere else, the state of research in that chair.
They may not, when:
- you only have the file privately and nobody can look it up;
- you use it to support an empirical number or an established theory that journals and books already cover;
- the thesis is under embargo;
- your institute excludes unpublished qualifying work below the doctorate — often one sentence in the handbook that nobody highlights on first reading.
The rule of thumb that survives marking: A dissertation is a source. A bachelor’s thesis is a pointer to where you should keep looking. If the BA cites a study you need, cite the study — not the BA. That is the same principle as any other second-hand grab.
How dense the bibliography should be depends on the type of thesis; benchmarks are in how many sources a bachelor’s thesis needs. A single unpublished master’s thesis carrying the argument stands out in a list that could have held twenty journals.
What the citation looks like
Regardless of style, a clean entry does five jobs: author, year, title, status (dissertation / unpublished thesis / book), university or publisher, plus the record that lets someone find the text (DOI, repository URL, ISBN). Drop the status and the dissertation reads like a monograph. Drop the record and it reads like a rumour.
APA 7
In the text like any other author–year source. A direct quotation also needs the page of the quoted passage:
Digital supervision shifts responsibility into the documentation, not out of it (Keller, 2023, p. 142).
In the reference list, university thesis in a repository, with a DOI:
Keller, S. (2023). Digital supervision in residential care [Doctoral dissertation, University of Zurich]. ZORA. https://doi.org/10.5167/uzh-00000
The same thesis, only a stable repository URL, no DOI:
Keller, S. (2023). Digital supervision in residential care [Doctoral dissertation, University of Zurich]. ZORA. https://www.zora.uzh.ch/id/eprint/00000/
Unpublished — only when nothing is actually public (rare for dissertations, the default for bachelor’s theses):
Hofmann, A. (2024). Digital documentation in home-care nursing [Unpublished bachelor’s thesis]. Zurich University of Applied Sciences.
APA 7 puts the publication status in square brackets after the title. [Doctoral dissertation, University of Zurich] is the English form; German-language lists often write [Dissertation, Universität Zürich]. Whatever your department printed on the handout wins — do not mix the two languages in the same list.
A ProQuest or database number, if you obtained the thesis through a database, goes in parentheses after the title, before the square-bracket status. Most DACH repositories do not need that.
Harvard
Harvard variants differ across universities more than APA does. The core order stays: author, year, title, Dissertation plus university, then the record.
In the text:
(Keller 2023, p. 142)
In the reference list (a common British-style form):
Keller, S. (2023) Digital supervision in residential care. Dissertation. University of Zurich. Available at: https://doi.org/10.5167/uzh-00000 (Accessed: 1 September 2026).
A German-language Harvard variant looks closer to this:
Keller, S. (2023): Digital supervision in residential care. Dissertation. University of Zurich. Available at: https://www.zora.uzh.ch/id/eprint/00000/ (Accessed: 01.09.2026).
Unpublished bachelor’s thesis, only if your handbook allows it:
Hofmann, A. (2024): Digital documentation in home-care nursing. Unpublished bachelor’s thesis. Zurich University of Applied Sciences.
If your style sheet puts brackets, colons, or the word dissertation differently, follow the sheet. The order of the elements is what holds Harvard together — not any one punctuation mark. Many Harvard sheets want an access date for online university theses; APA 7 does not, once a DOI or an archived repository version pins the document.
German footnote style (Deutsche Zitierweise)
In history, law, theology, and much of the humanities in the DACH region, the citation lives in the footnote. The first mention is a full reference; later mentions are shortened. Citing a doctoral thesis here means Diss. plus university plus year, not the publisher — unless you have the book edition in hand.
First footnote:
¹ Sofia Keller: Digital supervision in residential care, Diss. University of Zurich 2023, p. 142.
With repository or DOI, if your handbook wants online records in the footnote:
¹ Sofia Keller: Digital supervision in residential care, Diss. University of Zurich 2023, https://doi.org/10.5167/uzh-00000, p. 142.
Short form later in the thesis:
² Keller: Digital supervision in residential care, p. 155.
In the bibliography:
Keller, Sofia: Digital supervision in residential care, Dissertation, University of Zurich 2023.
Unpublished bachelor’s thesis — only with permission, and then said so:
Hofmann, Anna: Digital documentation in home-care nursing, unpublished bachelor’s thesis, Zurich University of Applied Sciences 2024.
Whether later footnotes use ibid. or repeat the short form is your style sheet’s call. That does not change the fact that the first footnote still needs status and university. Otherwise the dissertation reads like a book with no publisher — which is exactly what gets marked.
Repository URL or DOI — what has to go in the list
Students often treat ZORA, OPUS, and ethz links like any website. They are not. A handle (https://www.zora.uzh.ch/id/eprint/…), a DNB URN, or a university DOI is a persistent identifier, not a marketing link.
The practical order:
- DOI, if the landing page shows one. APA 7 puts it at the end as
https://doi.org/…. It survives a repository move. - Handle / URN / stable repository URL, if no DOI exists. ZORA, OPUS, ETH Research Collection, DNB — that is enough. You do not invent a DOI.
- Not a short link, an internal download button, or a VPN session URL.
Is the repository URL enough? Yes, if it is stable and your style does not demand a DOI that does not exist. Do you strictly need a DOI? No. Many clean university theses have none. What you must not do: hang the DOI of a later book edition on the thesis, or the DOI of an article the author carved out of chapter 4.
Harvard sheets often want an access date for online sources; APA 7 drops it once a DOI or an archived repository version holds the document. Follow the handout, not your gut.
Whether the entry exists and hangs together — does the DOI or URL actually resolve, do author, title, year match — is the same check as for any other citation. The order of steps is in how to check your citations.
When the dissertation appeared as a book
This is the second classic error, next to the unpublished bachelor’s thesis. Many dissertations go into a publisher’s list a year or two later — Nomos, transcript, Springer VS, a university press. The text is rarely identical: chapters drop out, a preface appears, the pagination changes.
Rule: Cite the version you read.
- You have the book in hand (ISBN, publisher, often a different title or subtitle): reference-list entry like a monograph. No
[Doctoral dissertation], no university in the publisher slot, no ZORA link as a stand-in for the publisher. - You only read the university thesis, but the book already exists: you may cite the dissertation. Cleaner, usually, is to get the book and cite that — examiners expect it once the book is easy to obtain.
- You compare both versions (rare, but legitimate): two entries, and the prose makes clear which claim sits in which version.
APA 7, book edition of the invented Keller thesis:
Keller, S. (2024). Digital supervision in care work. Nomos.
Harvard:
Keller, S. (2024): Digital supervision in care work. Baden-Baden: Nomos.
German footnote style, bibliography:
Keller, Sofia: Digital supervision in care work, Baden-Baden: Nomos 2024.
Do not mix: Keller 2023 in the text (thesis year) and Nomos 2024 in the list, or the reverse. Year, title, and identifier belong to one version.
Embargo
An embargo means the university or the author has held publication back for a time — a pending patent, sensitive data, a planned book, a statutory holding period. The landing page often still exists: title, name, year, and the sentence that the full text is not available.
From that:
- You do not cite the full text of an embargoed thesis. Not even if someone forwarded you the manuscript. A third party cannot check the passage, and you are walking around a deliberate access bar.
- You also do not cite the catalogue record alone. A title without a text is not a source for a claim.
- After the embargo ends, the normal rule applies: repository or book, mark the status, set the DOI or handle.
If the thesis looks indispensable for your topic, write to the author or the supervisor — not so you can get an unofficial PDF, but to ask whether a published extract, an article, or the planned monograph already exists. Until then you need another source.
Zotero: Thesis, not Book — unless it is the book
The catalogue record for a dissertation is almost always Thesis or Hochschulschrift. For citing the university-thesis version, that is the right type. In Zotero it is called Thesis.
Fields that have to be right:
- Author = the person who earned the degree, not the supervisor.
- Title = title of the thesis, not the later book title if it differs.
- Type = Doctoral dissertation / Ph.D. thesis — as your style expects. For BA/MA: Bachelor’s thesis / Master’s thesis.
- University = the institution, not the publisher.
- Place = only if your style wants the university location (Harvard often, APA 7 usually not).
- DOI or URL = the persistent address of the thesis version.
- Date = the year of the defence or deposit, not the year of the book edition.
If the connector pulled the later monograph: that is a Book. Publisher, ISBN, year of the monograph. A Thesis item with Nomos in the URL field is exactly the mix that APA formats as a dissertation and Harvard as a book — depending on the style file, and both wrong for the other version.
The reflex Duplicate and overwrite fields creates ghost versions. Create the second item on purpose, attach the PDF to the version you read, and link both under Related if you are comparing them.
If you write in Word without a reference manager, the same cut applies: Thesis for the university thesis, Book for the monograph. The fields are the same; only the automatic formatting is missing.
Pre-submission checklist
Go through the bibliography once looking only at university theses — not at commas, at status.
- Every dissertation is labelled dissertation / doctoral dissertation, not like a book with no publisher.
- Unpublished bachelor’s or master’s theses are only there if the handbook allows them — and then as unpublished, not as a grey monograph.
- DOI, handle, URN, or a stable repository URL belongs to the version you read; no DOI from the later book edition on the thesis.
- If the work appeared as a book and you read the book: a Book entry, publisher, book year. No extra Thesis entry beside it unless you compare the versions.
- No full text under embargo. No “PDF from a classmate” as the only record.
- The Zotero type is Thesis for the thesis, Book for the monograph. A swapped type twists status and publisher.
- Printed pagination of the PDF, not the viewer numbers 1, 2, 3.
Whether the entries exist and hang together (author, title, year, university) is the same check as for any other citation — the order of steps is in how to check your citations. If you do not want to hold the list against ZORA, OPUS, DNB and the catalogue line by line, one pass in the Quick Check is enough: paste, no sign-up, and you see which thesis lines resolve at all. Unpublished BA/MA entries without a record often surface there first — exactly the lines examiners query.
The rest — whether your sentence is actually on page 142 of the Keller dissertation and not in the Nomos introduction — is not a job for Zotero or a format checker. Dissertations are long open-access PDFs students often already have; that is why matching the claim against the full text is worth it. The bibliography checker is the way in, and Acurio matches the passage against the uploaded thesis.
A dissertation is the source type where form and status drift apart most easily: the same author, two versions, a repository link, maybe a book, maybe an embargo. Anyone who keeps university thesis and monograph, DOI and landing page, citable doctorate and unpublished bachelor’s thesis apart has already done the part examiners mark first. What remains is whether the passage supports what your text claims.