MLA

Van Vechten, Carl, 1880-1964. Robeson, Paul. Box 223. 1939. https://collections.library.yale.edu/catalog/2018371.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 223"])(1939)[Robeson, Paul]. https://collections.library.yale.edu/catalog/2018371.