MLA

Van Vechten, Carl, 1880-1964. Sands, Diana. Box 104 | Folder 1877. 1963 January 29. https://collections.library.yale.edu/catalog/2027784.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 104 | Folder 1877"])(1963 January 29)[Sands, Diana]. https://collections.library.yale.edu/catalog/2027784.