MLA

Koch, Frederick R. (Frederick Robinson). Auric, Georges. Box 47, folder 967. [1936-ca. 1950s]. https://collections.library.yale.edu/catalog/16601838.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 47, folder 967"])([1936-ca. 1950s])[Auric, Georges]. https://collections.library.yale.edu/catalog/16601838.