MLA

Van Vechten, Carl, 1880-1964. Bentley, Gladys. Box 84, folder 1403. 1932 February 27. https://collections.library.yale.edu/catalog/2001890.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 84, folder 1403"])(1932 February 27)[Bentley, Gladys]. https://collections.library.yale.edu/catalog/2001890.