MLA

Pound, Ezra, 1885-1972. The Waste Land: typescript. Box 97, folder 4141. n.d.. https://collections.library.yale.edu/catalog/17122736.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 97, folder 4141"])(n.d.)[The Waste Land: typescript]. https://collections.library.yale.edu/catalog/17122736.