MLA

Steinberg, Saul, 1914-1999. Examples of copyright infringement. Box 93, folder 2003 | Box 543 (Oversize), folder 7309 | Box 622 (Broadside). 1979–1992. https://collections.library.yale.edu/catalog/2017599.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 93, folder 2003 | Box 543 (Oversize), folder 7309 | Box 622 (Broadside)"])(1979–1992)[Examples of copyright infringement]. https://collections.library.yale.edu/catalog/2017599.