MLA

Toomer, Jean, 1894-1967. Holograph & fragments. Box 20, folder 511-12. 1934 Nov, n.d.. https://collections.library.yale.edu/catalog/10267784.

APA, 6th edition

Toomer, Jean, 1894-1967. (["Box 20, folder 511-12"])(1934 Nov, n.d.)[Holograph & fragments]. https://collections.library.yale.edu/catalog/10267784.