MLA

Van Vechten, Carl, 1880-1964. Collier, Constance. Box 341, folder 4403. 1932 December 8. https://collections.library.yale.edu/catalog/2032066.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 341, folder 4403"])(1932 December 8)[Collier, Constance]. https://collections.library.yale.edu/catalog/2032066.