MLA

Cohen, Felix S., 1907-1953. Draft chp. 12, Indian education. Box 14, folder 251. 1939 Sep. https://collections.library.yale.edu/catalog/17147625.

APA, 6th edition

Cohen, Felix S., 1907-1953. (["Box 14, folder 251"])(1939 Sep)[Draft chp. 12, Indian education]. https://collections.library.yale.edu/catalog/17147625.