MLA

Hughes, Langston, 1902-1967. Primus, Pearl. Box 8 (Oversize), folder 101. 1893-1954. https://collections.library.yale.edu/catalog/16198549.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 8 (Oversize), folder 101"])(1893-1954)[Primus, Pearl]. https://collections.library.yale.edu/catalog/16198549.