MLA

Pound, Ezra, 1885-1972. Pisa tradita: typescript. Box 124, folder 5113. [1942 Jul-Nov]. https://collections.library.yale.edu/catalog/17122829.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 124, folder 5113"])([1942 Jul-Nov])[Pisa tradita: typescript]. https://collections.library.yale.edu/catalog/17122829.