MLA

Pound, Ezra, 1885-1972. Typescript. Box 70, folder 3109. 1917. https://collections.library.yale.edu/catalog/16036079.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 70, folder 3109"])(1917)[Typescript]. https://collections.library.yale.edu/catalog/16036079.