MLA

Hughes, Langston, 1902-1967. National Urban League: affiliates and guilds. Box 119, folder 2253. 1947-63, n.d.. https://collections.library.yale.edu/catalog/32417804.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 119, folder 2253"])(1947-63, n.d.)[National Urban League: affiliates and guilds]. https://collections.library.yale.edu/catalog/32417804.