MLA

Hughes, Langston, 1902-1967. Afro-Arts Theatre. Box 3, folder 50. 1955-63. https://collections.library.yale.edu/catalog/32484354.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 3, folder 50"])(1955-63)[Afro-Arts Theatre]. https://collections.library.yale.edu/catalog/32484354.