Every academic thesis has two ways to incorporate other people’s ideas: the direct quotation (verbatim, in quotation marks) and the indirect quotation (paraphrased, in your own words). Both require a citation, but they are used with very different frequency — and beginners almost always get the ratio backwards. This post explains what to use when, how, and why.
Direct quotation: verbatim, in quotation marks
A direct quotation reproduces the source letter for letter. It appears in quotation marks, retains the original spelling (errors included), and requires a citation with a page number.
Mueller (2023, p. 42) writes: “Trust is the basic currency of every research relationship.”
In English academic writing, straight double quotation marks (”…”) are standard. What matters most is that you pick one convention and apply it consistently throughout the paper.
Indirect quotation: the idea, in your own words
An indirect quotation (also called a paraphrase) renders the content of a source in your own words. No quotation marks, but a citation is just as required — depending on your style, with or without “cf.” or “see” before it.
Trust is widely regarded in qualitative research as the central condition for productive interview situations (cf. Mueller 2023, p. 42).
Page numbers are standard even for paraphrases when the claim appears at a specific location. You can omit them only for arguments that run through an entire work.
When a direct quotation is appropriate
Direct quotations have three legitimate uses:
- Precise definitions. When a term’s original formulation is more exact than any paraphrase you could produce.
- Polarising or characteristic statements. Stylistically distinctive sentences whose force would be lost in paraphrase.
- Legal and literary source texts. Statutes, contracts, poems, passages from novels — where the exact wording is what counts.
Rule of thumb: No more than 10–15% of your citations should be direct quotations. Anyone above that is producing a quote collection, not an argument.
When the paraphrase is the default
In social-science and business writing, the paraphrase is the norm. Three typical situations:
- You summarise the results of a study (sample, method, finding).
- You integrate an author’s argument into your own line of reasoning.
- You condense several sources into a single claim (“A body of research shows…”).
The reason: a thesis in which every second statement is in quotation marks reads like a patchwork. Writing in your own words signals that you have genuinely understood the material.
If you are unsure about paraphrasing, read Paraphrasing without plagiarism — it covers how much you can rephrase a source before slipping into plagiarism territory.
Formal rules for direct quotations
For a direct quotation to be correctly formatted, a few steps are mandatory:
- Quotation marks open and close (”…”) — nothing inside them may be changed.
- Omissions use square brackets:
[…]. This shows that you have left something out of the original sentence. - Additions for grammatical adjustment or clarification:
[Ed. note]or simply[meaning X]. - Emphasis. If you italicise something in a quotation that is not italicised in the original:
(emphasis added)at the end. - Original spelling. Archaic or unusual spellings remain as they are — do not modernise them.
- Errors in the original are flagged with
[sic]immediately after the passage, showing the mistake is not yours.
Block quotations: when to indent
Beyond a certain length, a direct quotation is set as a block quotation: indented, often in smaller type or with narrower line spacing, without quotation marks, with the citation at the end.
The threshold varies by style:
- APA 7: 40 words or more.
- Chicago / German university styles: typically from 3–4 lines.
- Harvard / author-date styles: often from 40 words or 3 lines.
Use block quotations sparingly. Three block quotations on one page looks like a reader, not original work.
Citation formats at a glance
How a citation looks depends on the style required by your department:
- Harvard / APA (author-date in running text):
(Mueller 2023, p. 42)or(Mueller, 2023, p. 42). - German footnote style: Superscript numeral¹, citation in the footnote:
¹ Mueller, Trust in Research, 2023, p. 42. - Law review style: Full citation in the footnote, abbreviated from the second mention onwards.
For direct quotations, the page number is mandatory. For indirect quotations, most styles also expect one as soon as the claim appears at a specific location. “cf.” before a citation is required in some styles (Chicago Author-Date, many business-school guidelines) to signal a paraphrase; in others (APA 7) it is deliberately omitted — check your guide.
Overview: direct vs. indirect
| Feature | Direct quotation | Indirect quotation |
|---|---|---|
| Form | Verbatim, in ”…” | Your own words |
| Frequency | Max. 10–15% of citations | The default |
| Citation | With page number | Usually with page number, “cf.” depending on style |
| Modifications | Only with […], [Ed. note], [sic] | Free to rephrase |
| Most common errors | Missing page number, altered original | Too close to original (plagiarism zone), missing citation |
Three example pairs
Original sentence (Mueller 2023, p. 42): “Trust is the basic currency of every qualitative research relationship and determines whether an interview has substance.”
- Direct: Mueller (2023, p. 42) states: “Trust is the basic currency of every qualitative research relationship.”
- Indirect: Trust is the central condition for substantive interviews in qualitative research (cf. Mueller 2023, p. 42).
Original sentence (Schmidt 2019, p. 117): “The unexplained gender pay gap in Switzerland stood at 8.1 percent in 2018.”
- Direct: “The unexplained gender pay gap in Switzerland stood at 8.1 percent in 2018” (Schmidt 2019, p. 117).
- Indirect: Schmidt (2019, p. 117) puts the unexplained portion of Switzerland’s gender pay gap in 2018 at 8.1 percent.
Original sentence (Weber 2021, p. 9): “Platform economies work only when scale and trust grow simultaneously.”
- Direct: Weber (2021, p. 9) writes: “Platform economies work only when scale and trust grow simultaneously.”
- Indirect: Platform economies are viable, according to Weber (2021, p. 9), only when growth and trust advance in parallel.
Common mistakes
1. The 50-percent thesis. Out of uncertainty, beginners default to direct quotation. The result: a bachelor’s thesis where every second statement is in quotation marks. Examiners read this as a lack of original contribution — even if every citation is formally correct.
2. Mixed sentences. “Mueller (2023) writes that trust ‘is the basic currency’ and applies to every research relationship.” It is no longer clear what comes verbatim from the source and what is your own formulation. Either go fully direct or fully indirect.
3. Missing page number. Direct quotations without a page reference are formally deficient and draw a mark deduction in many department guidelines.
4. Altered original without marking. If you drop a word from the quotation or add one without using […] or [Ed. note], you have manipulated the quotation — a falsification in the strict sense.
5. Paraphrase too close to the original. Three words transposed, the rest is a direct quotation without quotation marks. Plagiarism checkers flag this. Either genuinely rephrase or quote directly instead.
Conclusion: verify what you cite
Whatever form you choose — at the end of a thesis comes the same step: checking every citation against the source. For direct quotations, Acurio checks the wording literally against the original — missing quotation marks, changed words, forgotten ellipsis markers, wrong page numbers. For indirect quotations, Acurio checks whether the paraphrased claim actually matches what the source says. The formatting is manual work. The verification is the part you no longer need to do by hand at the end.
Direct or indirect is ultimately a stylistic decision — the main thing is to make it consciously and execute it cleanly. Anyone who checks form and content together submits a thesis that holds up on both axes.