MLA

Pound, Ezra, 1885-1972. Monotti, Francesco. Box 34, folder 1452-1457. 1928-60. https://collections.library.yale.edu/catalog/17122598.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 34, folder 1452-1457"])(1928-60)[Monotti, Francesco]. https://collections.library.yale.edu/catalog/17122598.