MLA

Van Vechten, Carl, 1880-1964. Vivian, David. Box 385 | Folder 5794. 1937 May 30. https://collections.library.yale.edu/catalog/10623819.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 385 | Folder 5794"])(1937 May 30)[Vivian, David]. https://collections.library.yale.edu/catalog/10623819.