MLA

Van Vechten, Carl, 1880-1964. Bachardy, Don. Box 333 | Folder 4173. 1954 January 2. https://collections.library.yale.edu/catalog/2030217.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 333 | Folder 4173"])(1954 January 2)[Bachardy, Don]. https://collections.library.yale.edu/catalog/2030217.