WriteMyPapers.net Citation generator: APA 7, MLA 9, Chicago and ISO 690
Paste a DOI or an ISBN, check the details, and copy a reference formatted in four styles, with the matching in-text citation. You can also type the details of any book, article, chapter or web page by hand.
What this tool does, and what it doesn’t
- It helps you do your own work: it formats references for sources you have actually read. It does not find sources or check what you write about them.
- WriteMyPapers.net does not write, sell or edit essays or papers, and never will. No tool here writes your essay for you.
- Submitting work you did not write yourself, whether bought, copied or generated by AI without permission, is academic misconduct at almost every university. Check your institution’s academic integrity policy, especially on AI tools.
Try: · ·
The list exists only in this tab: it disappears when you close or reload the page.
Privacy: the formatting runs in your browser. When you click “Look up”, your browser sends the DOI to api.crossref.org or the ISBN to openlibrary.org, and nothing else: no account, no cookie from us, no copy of your list. Details you type by hand are never sent anywhere. This page loads no analytics, advertising or other third-party scripts.
How it works
- Look up or type. A DOI is looked up in Crossref, the registry used by most academic publishers; an ISBN in Open Library, the Internet Archive’s open book catalogue. The details fill the form.
- Check the details. Correct anything the database got wrong: author names, capitals in the title, the edition you actually used.
- Copy. Each style is shown with its in-text citation. “Copy” keeps the italics when you paste into Word or Google Docs. Add references to a list to copy or download them in alphabetical order.
The formatting itself is done by a small script on this page, written for this site, following the APA Publication Manual (7th ed.), the MLA Handbook (9th ed.), the Chicago Manual of Style (18th ed., notes and bibliography) and the common application of ISO 690:2021. No citation library or external service formats your references.
Example
The DOI 10.1038/nature14539 (the 2015 Nature review of deep learning) gives:
APA 7: LeCun, Y., Bengio, Y., & Hinton, G. (2015). Deep learning. Nature, 521(7553), 436–444. https://doi.org/10.1038/nature14539
MLA 9: LeCun, Yann, et al. “Deep Learning.” Nature, vol. 521, no. 7553, 2015, pp. 436-44. https://doi.org/10.1038/nature14539.
Chicago 18: LeCun, Yann, Yoshua Bengio, and Geoffrey Hinton. “Deep Learning.” Nature 521, no. 7553 (2015): 436–44. https://doi.org/10.1038/nature14539.
ISO 690: LECUN, Yann, BENGIO, Yoshua and HINTON, Geoffrey. Deep learning. Nature. 2015, vol. 521, no. 7553, pp. 436–444. Available from: https://doi.org/10.1038/nature14539
Frequently asked questions
Is the citation generator free?
Yes, with no sign-up and no limit. It has no ads and does not collect what you enter.
What is sent when I look up a DOI or ISBN?
Only the DOI or ISBN itself, from your browser directly to Crossref (api.crossref.org) or Open Library (openlibrary.org). Nothing is sent to WriteMyPapers.net, and the details you type by hand never leave your browser.
Why does APA change the capitals in my title?
APA 7 uses sentence case for the titles of articles and books: only the first word, the first word after a colon and proper nouns take a capital. The tool lowers the other words automatically, so check names, places and institutions.
Which Chicago and ISO 690 variants does it follow?
Chicago is formatted in the 18th edition’s notes-and-bibliography system (bibliography entry plus a short note). ISO 690 has no single official layout; the tool uses the common “FAMILY, Given” form. If your department publishes its own guide, it takes priority.
Can I trust the result without checking?
No generator can guarantee it, because databases contain errors (Open Library is edited by volunteers). Compare the reference with the source, especially names, the year and page numbers.
Guides that go with this tool
Sources and licences
- Crossref, REST API documentation: “No sign-up is required to use the REST API, and almost none of the metadata is subject to copyright, and you may use it for any purpose” (checked 13 November 2026).
- Open Library, Using Open Library: the catalogue was dedicated to the public domain by contributing libraries; contributions are under CC0 1.0 (checked 13 November 2026).
- American Psychological Association, Publication Manual, 7th ed. (2019); Modern Language Association, MLA Handbook, 9th ed. (2021); University of Chicago Press, The Chicago Manual of Style, 18th ed. (2024); ISO 690:2021, Guidelines for bibliographic references and citations to information resources.