MLA

Van Vechten, Carl, 1880-1964. Benton, Thomas Hart. Box 335 | Folder 4229. 1935 April 16. https://collections.library.yale.edu/catalog/2030758.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 335 | Folder 4229"])(1935 April 16)[Benton, Thomas Hart]. https://collections.library.yale.edu/catalog/2030758.