MLA

Hughes, Langston, 1902-1967. American Play Company, Inc.. Box 6, folder 135-136. 1931-41, n.d.. https://collections.library.yale.edu/catalog/32579592.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 6, folder 135-136"])(1931-41, n.d.)[American Play Company, Inc.]. https://collections.library.yale.edu/catalog/32579592.