MLA

Kilpatrick, Jack Frederick (1915-1967). Journal notebook. Box 12, folder 1099. circa 1935. https://collections.library.yale.edu/catalog/15494373.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 12, folder 1099"])(circa 1935)[Journal notebook]. https://collections.library.yale.edu/catalog/15494373.