MLA

Hughes, Langston, 1902-1967. Ram Gopal. Box 15 (Oversize), folder 155. 1893-1954. https://collections.library.yale.edu/catalog/32240071.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 15 (Oversize), folder 155"])(1893-1954)[Ram Gopal]. https://collections.library.yale.edu/catalog/32240071.