MLA

Van Vechten, Carl, 1880-1964. Avakian, George. Box 333, folder 4169. 1954 October 8. https://collections.library.yale.edu/catalog/2030205.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 333, folder 4169"])(1954 October 8)[Avakian, George]. https://collections.library.yale.edu/catalog/2030205.