The publisher is the organization primarily responsible for producing the source or making it available to the public. (p. 164)
If two or more organizations are named in the source and they seem equally responsible for the work, cite each of them, separating the names with a forward slash (/). But if one of the organizations had primary responsibility for the work, cite it alone. (p. 170)
Omit business words when you give publishers' names in the list of works cited, including Company (Co.), Corporation (Corp.), Incorporated (Inc.), Limited (Ltd.), etc.
In the names of academic presses, replace University Press with UP (or, if the words are separated by other words or appear alone, replace them with U and P: "U of Chicago P").
In all other cases, write publishers' names in full. (p. 172)
A publisher's name may be omitted in the following kinds of publications:
See p. 165 in the MLA Handbook Ninth ed. for more information.
To determine the publisher of a book, look first on the title page. If no publisher's name appears there, look on the copyright page (usually the reverse of the title page). (p. 166)
Here are some examples of books properly cited with the publisher highlighted:
Jacobs, Alan. The Pleasures of Reading in an Age of Distraction. Oxford UP, 2011.
Lessig, Lawrence. Remix: Making Art and Commerce Thrive in the Hybrid Economy. Penguin Press, 2008.
Films and television series are often produced and distributed by several companies performing different tasks. You should generally cite the organization that had the primary overall responsibility for it. (p. 168)
Kuzui, Fran Rubel, director. Buffy the Vampire Slayer. Twentieth Century Fox, 1992.
A blog network may be considered the publisher of the blogs it hosts.
Here is an example:
Clancy, Kate. "Defensive Scholarly Writing and Science Communication." Context and Variation, Scientific American Blogs, 24 Apr. 2013, blogs.scientificamerican.com/context-and-variation/2013/04/24/defensive-scholarly-writing-and-science-communication/.
Web sites are published by various kinds of organizations, such as museums, libraries, and universities and their departments. (p. 167)
The publisher's name can often be found in a copyright notice at the bottom of the home page or on a page that gives information about the site.
Here are two examples:
Harris, Charles. "Teenie." Woman in Paisley Shirt behind Counter in Record Store. Teenie Harris Archive, Carnegie Museum of Art, Pittsburgh, teenie.cmoa.org/interactive/index.html#date08.
Manifold Greatness: The Creation and Afterlife of the King James Bible. Folger Shakespeare Library / Bodleian Libraries, U of Oxford / Harry Ransom Center, U of Texas, Austin, manifoldgreatness.org.
If citing a government agency as a publisher, you can truncate the name when the agency name has many component parts. Keep only the name of the government and the primary agency. (p. 171)
Durose, Matthew R., et al. Multistate Criminal History Patterns of Prisoners Released in Thirty States. U.S. Dept. of Justice, Sept. 2015, www.bjs.gov/content/pub/pdf/mschpprts05.pdf.