MLA

Hughes, Langston, 1902-1967. Bentley, Gladys. Box 2 (Oversize), folder 16. 1893-1954. https://collections.library.yale.edu/catalog/16195305.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 2 (Oversize), folder 16"])(1893-1954)[Bentley, Gladys]. https://collections.library.yale.edu/catalog/16195305.