Cite

Cowboy 11

MLA

Steinberg, Saul, 1914-1999. Cowboy 11. Box 412, folder 5501. undated. https://collections.library.yale.edu/catalog/12154335.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 412, folder 5501"])(undated)[Cowboy 11]. https://collections.library.yale.edu/catalog/12154335.