MLA

Toomer, Jean, 1894-1967. "Sheik and Anti-Sheik": typescript. Box 58, folder 1372. n.d.. https://collections.library.yale.edu/catalog/16725551.

APA, 6th edition

Toomer, Jean, 1894-1967. (["Box 58, folder 1372"])(n.d.)["Sheik and Anti-Sheik": typescript]. https://collections.library.yale.edu/catalog/16725551.