MLA

Pound, Ezra, 1885-1972. Typescript, original. Box 65, folder 2795. n.d.. https://collections.library.yale.edu/catalog/2068782.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 65, folder 2795"])(n.d.)[Typescript, original]. https://collections.library.yale.edu/catalog/2068782.