MLA

Hughes, Langston, 1902-1967. AMSAC: schedule and notes. Box 483, folder 12207. ca. 1961. https://collections.library.yale.edu/catalog/17034183.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 483, folder 12207"])(ca. 1961)[AMSAC: schedule and notes]. https://collections.library.yale.edu/catalog/17034183.