MLA

Pound, Ezra, 1885-1972. Ideogrammario...: typescript. Box 107, folder 4486. [1939]. https://collections.library.yale.edu/catalog/17122779.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 107, folder 4486"])([1939])[Ideogrammario...: typescript]. https://collections.library.yale.edu/catalog/17122779.