MLA

Nugent, Bruce, 1906-1987. Perez, Angelo. Box 12. 1960-1977. https://collections.library.yale.edu/catalog/16814009.

APA, 6th edition

Nugent, Bruce, 1906-1987. (["Box 12"])(1960-1977)[Perez, Angelo]. https://collections.library.yale.edu/catalog/16814009.