MLA

Matthiessen, F. O. (Francis Otto), 1902-1950. Kirstein, Lincoln. Box 2. 1941-1947. https://collections.library.yale.edu/catalog/32239722.

APA, 6th edition

Matthiessen, F. O. (Francis Otto), 1902-1950. (["Box 2"])(1941-1947)[Kirstein, Lincoln]. https://collections.library.yale.edu/catalog/32239722.