MLA

Pound, Ezra, 1885-1972. American Imperialist: "When Thieves Fall Out": typescript. Box 126, folder 5232. [1943] July 17. https://collections.library.yale.edu/catalog/17122842.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 126, folder 5232"])([1943] July 17)[American Imperialist: "When Thieves Fall Out": typescript]. https://collections.library.yale.edu/catalog/17122842.