✦ Verified against real databases

Cite anything in seconds — correctly.

Paste a link, DOI, or ISBN and get a perfect citation in APA, MLA, Chicago and more — built from real records in Crossref, OpenAlex and PubMed, so you never cite a fake. Free, no ads, no sign-up, no subscription traps.

Citation style

Tip: a DOI, ISBN, or link gives the most accurate result.

✓

Verified, never invented

Every lookup is grounded in real databases (Crossref, Open Library, PubMed) — so you never cite a source that doesn't exist.

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All styles free

APA, MLA, Chicago, Harvard, IEEE and more — no style locked behind a paywall, ever.

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Free the honest way

No ads, no sign-up walls, no auto-renewing subscription to cancel. Your bibliography saves right in your browser.

🔎

Catches AI's mistakes

Paste a ChatGPT or Perplexity answer and Corroba finds the real sources behind each claim — or flags the ones that don't exist.

How it works

Paste a link, DOI, or ISBN

We detect what it is and pull the details from authoritative sources.

Review the details

Everything is editable, with a live preview so you see the citation as you go.

Add & export

Build your bibliography, re-style the whole list in a click, and copy or download it.

Pick your citation style

APA 7th editionSocial sciences, psychology, education, nursing, business MLA 9th editionHumanities, literature, languages, arts Chicago 17th (author–date)Sciences and social sciences Chicago 17th (notes–bibliography)History, humanities, arts Harvard (Cite Them Right)UK and general use IEEEEngineering, computer science, IT AMA 11th editionMedicine and health sciences NatureNatural sciences VancouverMedicine and the sciences ASA (Sociology)Sociology APSA (Political science)Political science ACS (Chemistry)Chemistry Bluebook (Law)Law (United States)

New

Corroba Verify

Wrote a paper with help from ChatGPT? Paste your reference list and we'll flag any hallucinated, mismatched, broken, or retracted citations — and show you the real source when it exists.

Verify your references →

Frequently asked questions

Is Corroba really free?

Yes. Generating and exporting citations in every supported style is free, with no account required and no paywalled styles.

Do I need to create an account?

No. Your bibliography is saved automatically in your browser, so you can close the tab and come back later without signing in.

How accurate are the citations?

We build each citation from real bibliographic metadata using the same open formatting engine (citeproc + CSL) that powers Zotero. It's very accurate, but you should still double-check details against your style guide — especially for unusual source types.

Which citation styles are supported?

APA 7th, MLA 9th, Chicago (both author–date and notes–bibliography), Harvard, IEEE, AMA and Nature — with more on the way.