MLA

Howe, Susan, 1937-. Bervin, Jen. Box 1. 1956-2008. https://collections.library.yale.edu/catalog/17165223.

APA, 6th edition

Howe, Susan, 1937-. (["Box 1"])(1956-2008)[Bervin, Jen]. https://collections.library.yale.edu/catalog/17165223.