MLA

Hacker, Marilyn, 1942-. "R" General. Box 3. 1970 2000. https://collections.library.yale.edu/catalog/17364025.

APA, 6th edition

Hacker, Marilyn, 1942-. (["Box 3"])(1970 2000)["R" General]. https://collections.library.yale.edu/catalog/17364025.