MLA

Van Vechten, Carl, 1880-1964. Jackman, Harold. Box 94 | Folder 1650. 1932 September 11. https://collections.library.yale.edu/catalog/2024089.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 94 | Folder 1650"])(1932 September 11)[Jackman, Harold]. https://collections.library.yale.edu/catalog/2024089.