MLA

Van Vechten, Carl, 1880-1964. Worthington, Marjorie Muir. Box 384, folder 5739. 1934 November 14. https://collections.library.yale.edu/catalog/10648050.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 384, folder 5739"])(1934 November 14)[Worthington, Marjorie Muir]. https://collections.library.yale.edu/catalog/10648050.