MLA

Hughes, Langston, 1902-1967. Actors Equity Association. Box 2, folder 23. 1952-64, n.d.. https://collections.library.yale.edu/catalog/32604255.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 2, folder 23"])(1952-64, n.d.)[Actors Equity Association]. https://collections.library.yale.edu/catalog/32604255.