MLA

Van Vechten, Carl, 1880-1964. Chookasian, Lili. Box 87, folder 1466. 1964 May 5. https://collections.library.yale.edu/catalog/2021806.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 87, folder 1466"])(1964 May 5)[Chookasian, Lili]. https://collections.library.yale.edu/catalog/2021806.