Walt Whitman Society of America
MLA
Hughes, Langston, 1902-1967. Walt Whitman Society of America. Box 167, folder 3061. 1942-56. https://collections.library.yale.edu/catalog/31915934.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 167, folder 3061"])(1942-56)[Walt Whitman Society of America]. https://collections.library.yale.edu/catalog/31915934.