Cite

Research material

MLA

Warren, Robert Penn, 1905-1989. Research material. Box 139, folder 2521. n.d.. https://collections.library.yale.edu/catalog/17096926.

APA, 6th edition

Warren, Robert Penn, 1905-1989. (["Box 139, folder 2521"])(n.d.)[Research material]. https://collections.library.yale.edu/catalog/17096926.