MLA

Van Vechten, Carl, 1880-1964. Holt, Nora Douglas. Box 93 | Folder 1623. 1955 June 28. https://collections.library.yale.edu/catalog/2023117.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 93 | Folder 1623"])(1955 June 28)[Holt, Nora Douglas]. https://collections.library.yale.edu/catalog/2023117.