MLA 9 Citation Guide

The MLA Style Center has produced an excellent example based tutorial for Works Cited. is worth the time to go through it carefully

Works Cited List Entries 

• A bibliographic citation must include two containers if you are using a source within a source. It is common for a source to have two containers, especially a digital source.

Goldman, Anne. “Questions of Transport: Reading Primo Levi Reading Dante.” The Georgia Review, vol. 64, no. 1, spring 2010, pp. 69-88. JSTOR, www.jstor.org/stable/41403188. 

In the example citation above, the first container is the title of the journal (The Georgia Review) because it "contains" the article ("Questions of Transport"). The second container is the name of the database (JSTOR) because it "contains" the journal (Georgia Review).

*Note: Containers are always italicized