MLA

Dreier, Katherine S. (Katherine Sophie), 1877-1952. Committees and officers. Lists, typescript and carbon. Box 93, folder 2355. 1920. https://collections.library.yale.edu/catalog/2040539.

APA, 6th edition

Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 93, folder 2355"])(1920)[Committees and officers. Lists, typescript and carbon]. https://collections.library.yale.edu/catalog/2040539.