MLA

Pound, Ezra, 1885-1972. Typescript. Box 105, folder 4394-4395. n.d.. https://collections.library.yale.edu/catalog/17122768.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 105, folder 4394-4395"])(n.d.)[Typescript]. https://collections.library.yale.edu/catalog/17122768.