MLA

Pound, Ezra, 1885-1972. Farinacci, Roberto. Box 16, folder 713. 1939-44. https://collections.library.yale.edu/catalog/31964740.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 16, folder 713"])(1939-44)[Farinacci, Roberto]. https://collections.library.yale.edu/catalog/31964740.