MLA

Van Vechten, Carl, 1880-1964. Seldes, Gilbert. Box 374 | Folder 5389. 1932 October 7. https://collections.library.yale.edu/catalog/10051179.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 374 | Folder 5389"])(1932 October 7)[Seldes, Gilbert]. https://collections.library.yale.edu/catalog/10051179.