Create CSE Citation–Sequence references for biology and the natural sciences. Enter the source details, generate a numbered entry, and verify it against the original work and your course or publisher requirements.
Citation Format
Source Type
Paste a public URL to extract available citation details, then review every field before generating the citation.
Citation Details
Three steps
How to use the CSE citation generator
- Select the source type. Choose Website, Book, Journal, Newspaper, or YouTube and enter the bibliographic details printed on or supplied by the source.
- Generate the reference. Check the authors, title, publisher or journal, date, volume, issue, pages, DOI, and URL wherever those details apply.
- Number by first appearance. This tool supports the CSE Citation–Sequence system: assign each source a number when it first appears and reuse that number for later citations of the same work.
Supported output
CSE Citation–Sequence format
The CSE Manual describes Citation–Sequence, Citation–Name, and Name–Year systems. This generator produces Citation–Sequence output only. References are numbered in order of first citation rather than alphabetized. The form currently supports websites, books, journal articles, newspaper articles, and YouTube videos entered manually; it does not perform an automatic DOI, ISBN, or title lookup.
- Journal articles: enter every displayed author, the article and journal titles, year, volume, issue, pages, and a DOI-based URL when available.
- Books: confirm the author, title, edition, publisher, and publication year.
- Online sources: preserve the responsible author or organization, title, publisher or site, publication or update date, access date when needed, and stable URL.
For the complete rules and additional source types, consult the official CSE Citation Quick Guide and the instructions for your course or publisher.
Worked example
CSE journal citation example
The example below uses illustrative bibliographic details shared with the AMA and ACS examples on this site. A real journal title should be abbreviated according to the abbreviation system required by your publisher.
Reference: 1. Chen M, Ortiz L. Molecular markers in coastal plants. J Example Res. 2024;18(2):45–58.
In text: Molecular markers can clarify population differences.1
Details to review
CSE edge cases and limits
- Repeated source: keep its original number instead of creating another reference-list entry.
- More than five authors: current ninth-edition quick guidance lists the first author followed by “et al.”; verify any journal-specific variation before submission.
- No author: begin with the title when no person or organization is identified.
- No publication date: an online reference may need “date unknown” plus an access date.
- Online journal article: prefer a DOI-based URL when one is available, but copy it from the source because the generator does not retrieve it.
- Other CSE systems: Citation–Name and Name–Year are outside this tool’s present output; use the system assigned by your instructor or publisher.
FAQ
CSE citation questions
Which CSE system does this generator support?
It supports CSE Citation–Sequence. Sources receive numbers in the order they first appear, and the reference list follows that same order.
Does CSE have more than one citation system?
Yes. The CSE Manual also describes Citation–Name and Name–Year, but this page does not generate those two systems.
Do I reuse a CSE citation number?
Yes. Cite the same source with its original number every time it appears again in the document.
Does the tool look up a DOI or ISBN automatically?
No. Enter identifiers and source details manually, then compare the generated reference with the original source.
Related help
Guides for scientific references
Review how to cite a journal article, a book, or a website. The guides to in-text citations and multiple authors can help with final checks. For another style, return to the main citation generator.