Format any book, article or website reference in APA, MLA, Chicago or Harvard style instantly. Free, no sign-up.
What this tool does
A citation formatter turns the details you already have — author, year, title, publisher — into a correctly punctuated reference. The hard part is never typing; it is remembering where the commas, italics and periods go in each style. This tool applies the core rules of APA 7th, MLA 9th, Chicago 17th (author-date) and Harvard so you get a clean reference in seconds, and you can compare styles side by side before you paste one into your paper.
Why it matters
Good citations do quiet work. They let a reader find every source you used, they show that your argument rests on real evidence rather than memory, and they protect you: a clean reference list is much harder to challenge than a vague one. Most marks lost on referencing are not lost on difficult sources. They are lost on small, repeated slips — a missing year, a swapped initial, a title in the wrong case — that a quick tool pass catches before submission.
How to use it
- Type the author surname and initials, year, title and source details.
- Pick a style: APA, MLA, Chicago or Harvard.
- Click Format and copy the result into your reference list.
Worked example
Author: Patel, R. | Year: 2023 | Title: Clean Water Systems | Publisher: Oxford University Press. APA gives: Patel, R. (2023). Clean water systems. Oxford University Press. MLA gives: Patel, R. Clean Water Systems. Oxford UP, 2023. Same facts, different punctuation — that is exactly what the tool handles for you.
Tips for good results
Enter surnames exactly as printed on the source. A misspelled author name copied into ten references is ten errors, not one.
Work from the source itself, not from another paper’s copy of it. And keep one style for the whole list: a single mixed entry undermines an otherwise perfect bibliography.
Honest limits
It formats single-author book-style references from the fields you give it. It does not fetch metadata, check DOIs, or cover every edge case of the full style manuals (edited volumes, translators, multi-author rules beyond two authors). Always check your university’s style sheet for the final version.
Common mistakes to avoid
Common mistakes to avoid: copying a reference from another paper without checking it against the original, trusting a PDF filename for the title or year, and mixing two styles in one list. Each of these looks harmless alone and careless together. Run the tool, read its output once, and compare it with the source itself before you paste it into your document.
Before you submit
Run through this short check before you submit: is every author name spelled as it appears on the source, is every year present and correct, and does every in-text citation have a matching entry in your reference list? Read the list once from top to bottom rather than skimming it. Most referencing errors are found in that single slow read, and fixing them there is far cheaper than fixing them after a reviewer finds them. If one entry still looks odd after that read, check it against the original source before you change anything else.
Frequently asked questions
Is this tool really free?
Yes. It runs in your browser on this page, with no account and no payment. Nothing you paste leaves your computer.
Do I still need to check the result?
Yes, once. Tools apply rules; they cannot verify facts about your source. Compare the output with the source itself before submitting.
Can I use the output in my paper?
Yes. The output is a formatted reference or analysis for your own work. Keep the source’s facts accurate and the formatting consistent across your list.
What if the tool’s output differs from my style guide?
Trust the style guide. Tools encode the common rules of a style; your university or journal’s own sheet wins every disagreement. Use the tool to do the routine work, then apply the local rule where it differs.
Also available in Spanish: Formateador Dinámico de Citas – APA, MLA, Chicago y Harvard Gratis en Línea, Sin Registro.