7-Publisher,
The producer or distributor of the source is the publisher
(ex.: Gale,)
(ex.: Smithsonian Museum,)
(ex.: Universal Studios, )
(ex.: Penn State University,)
No need to include publisher in the following:
-periodicals
-works published by the author or editor
-a web site with a title the same name as its publisher
-a web site that gets you to the work but doesn't actually publish them (like the chrome browser gets you to websites but doesn't actually make those websites) such as YouTube, Word Press
For example:
Shipler, David K. The Working Poor. Vintage Books, 2016.
Owens, Laura. Untitled. 2000. Sadie Coles HQ, The Museum of Modern Art, New
York. www.moma.org/calendar/exhibitions/149?locale=en. Accessed 10 May
2017.