MLA

Van Vechten, Carl, 1880-1964. Westley, Helen. Box 382 | Folder 5704. 1932 August 25. https://collections.library.yale.edu/catalog/10636662.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 382 | Folder 5704"])(1932 August 25)[Westley, Helen]. https://collections.library.yale.edu/catalog/10636662.