MLA

Van Vechten, Carl, 1880-1964. Sullivan, Maxine. Box 105 | Folder 1915. 1941 October 7. https://collections.library.yale.edu/catalog/2028073.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 105 | Folder 1915"])(1941 October 7)[Sullivan, Maxine]. https://collections.library.yale.edu/catalog/2028073.