MLA

Pound, Ezra, 1885-1972. Typescript, 2 discarded leaves; Typescript, photocopy. Box 72, folder 3232. n.d.. https://collections.library.yale.edu/catalog/16169369.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 72, folder 3232"])(n.d.)[Typescript, 2 discarded leaves; Typescript, photocopy]. https://collections.library.yale.edu/catalog/16169369.