MLA

Bontemps, Arna, 1902-1973. Typescript, corrected, of unpublished article. Box 5, folder 80. n.d.. https://collections.library.yale.edu/catalog/16730687.

APA, 6th edition

Bontemps, Arna, 1902-1973. (["Box 5, folder 80"])(n.d.)[Typescript, corrected, of unpublished article]. https://collections.library.yale.edu/catalog/16730687.