ama – AMA manual of style citations
The style covers JAMA, Cancer, and many others. It provides up to 6 authors, or 3 et.al.; titles are in italics, labels are numeric, and sorting is by order of reference.
Free license not otherwise listed, or more than one free license applies
Howard Trickey (inactive)
BibTeX style or style generator
typesetting journals, etc
Maybe you are interested in the following packages as well.
- gost: BibTeX styles to format according to GOST
- apasoft: An APA-like style for BibTeX
- cbe: Bibliography style for Council of Biology Editors format
- development: BibTeX style file for the journal Development