MLA

Nugent, Bruce, 1906-1987. Arnstein, Daphne. Box 2. 1972-1987. https://collections.library.yale.edu/catalog/16813998.

APA, 6th edition

Nugent, Bruce, 1906-1987. (["Box 2"])(1972-1987)[Arnstein, Daphne]. https://collections.library.yale.edu/catalog/16813998.