MLA

Van Vechten, Carl, 1880-1964. Langner, Philip. Box 360 | Folder 4946. 1932 May 16. https://collections.library.yale.edu/catalog/2056049.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 360 | Folder 4946"])(1932 May 16)[Langner, Philip]. https://collections.library.yale.edu/catalog/2056049.