MLA

Stettheimer, Florine, 1871-1944. Van Vechten, Carl. Box 5, folder 101-03. 1917-53. https://collections.library.yale.edu/catalog/17054792.

APA, 6th edition

Stettheimer, Florine, 1871-1944. (["Box 5, folder 101-03"])(1917-53)[Van Vechten, Carl]. https://collections.library.yale.edu/catalog/17054792.