MLA

Wright, Richard, 1908-1960. Houseman, John. Box 99, folder 1396. 1940-43. https://collections.library.yale.edu/catalog/16238344.

APA, 6th edition

Wright, Richard, 1908-1960. (["Box 99, folder 1396"])(1940-43)[Houseman, John]. https://collections.library.yale.edu/catalog/16238344.