MLA

Van Vechten, Carl, 1880-1964. Robeson, Eslanda Goode. Box 102, folder 1844. 1933 June 1. https://collections.library.yale.edu/catalog/2027401.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 102, folder 1844"])(1933 June 1)[Robeson, Eslanda Goode]. https://collections.library.yale.edu/catalog/2027401.