The full name of the publisher (publisher’s imprint, as shown on the title page) should be given, abbreviated in accordance with the style used by the JAMA Network journals (see 13.7, Commercial Firms) but without any punctuation. Even if the name of a publishing firm has changed, use the name that was given on the published work.
The following are examples of the format for a book with a joint imprint:
1. Green L. W. Barns-Graham: A Studio Life. 2nd ed. Lund Humphries/Ashgate Publishing; 2011.
2. Taylor K. Philip Evergood: Never Separate From the Heart. Center Gallery, Bucknell University Press/Associated University Presses; 1987.
3. Style Manual Committee, Council of Science Editors. Scientific Style and Format: The CSE Manual for Authors, Editors, and Publishers. 8th ed. University of Chicago Press/Council of Science Editors; 2014.
If there is no publisher’s name available, use “Publisher unknown” in the place of the publisher’s location and name.