MLA

Yerkes, Robert M. (Robert Mearns), 1876-1956. Chim and Panzee. Box 131, folder 2236. 1923-1924. https://collections.library.yale.edu/catalog/10186987.

APA, 6th edition

Yerkes, Robert M. (Robert Mearns), 1876-1956. (["Box 131, folder 2236"])(1923-1924)[Chim and Panzee]. https://collections.library.yale.edu/catalog/10186987.