MLA

Toomer, Jean, 1894-1967. Drafts. Box 11, folder 343. 1931-43, n.d.. https://collections.library.yale.edu/catalog/16871730.

APA, 6th edition

Toomer, Jean, 1894-1967. (["Box 11, folder 343"])(1931-43, n.d.)[Drafts]. https://collections.library.yale.edu/catalog/16871730.