MLA

Lansing, Gerrit (1928-2018). Alpert, Barry. Box 1. 1973. https://collections.library.yale.edu/catalog/17210173.

APA, 6th edition

Lansing, Gerrit (1928-2018). (["Box 1"])(1973)[Alpert, Barry]. https://collections.library.yale.edu/catalog/17210173.