MLA

Van Vechten, Carl, 1880-1964. Primus, Pearl, in Hard Time Blues, dance choreographed by Pearl Primus. Box 101 | Folder 1829. 1943 October 11. https://collections.library.yale.edu/catalog/2001929.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 101 | Folder 1829"])(1943 October 11)[Primus, Pearl, in Hard Time Blues, dance choreographed by Pearl Primus]. https://collections.library.yale.edu/catalog/2001929.