A publisher is the "person, firm, or corporate body responsible for making a work available to the public" (NISO). Publisher information is usually found on the title page or verso of the title page of a book. Record the name as it appears in the publication.
Omit words that designate a business purpose from the publisher name such as Co., LLC, and Inc. from publisher names. Retain the words Books and Press.
If more than one publisher is given, use the first one or the one that represents the home office, if given.
Begin publisher information after the title. End publisher information with a period.
Sittler, R. L. & Cook, D. (2009). The library instruction cookbook. American Library Association.
If the publisher is the same as the author, then omit the publisher name.
American Psychological Association. (2009). Crediting sources: Citing references in text. Publication Manual of the American Psychological Association (6th ed., p. 177).