MLA

Pound, Ezra, 1885-1972. Scollard, Clinton. Box 47, folder 2078. [1926-31]. https://collections.library.yale.edu/catalog/17122626.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 47, folder 2078"])([1926-31])[Scollard, Clinton]. https://collections.library.yale.edu/catalog/17122626.