MLA

Van Vechten, Carl, 1880-1964. Nurse, Godfrey. Box 226. 1959 October 20. https://collections.library.yale.edu/catalog/2026441.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 226"])(1959 October 20)[Nurse, Godfrey]. https://collections.library.yale.edu/catalog/2026441.