MLA

Hughes, Langston, 1902-1967. American Civil Liberties Union. Box 6, folder 118. 1943-63. https://collections.library.yale.edu/catalog/32579291.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 6, folder 118"])(1943-63)[American Civil Liberties Union]. https://collections.library.yale.edu/catalog/32579291.