MLA

Pound, Ezra, 1885-1972. Cure It: typescript. Box 95, folder 4004. n.d.. https://collections.library.yale.edu/catalog/17122727.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 95, folder 4004"])(n.d.)[Cure It: typescript]. https://collections.library.yale.edu/catalog/17122727.