MLA

Pound, Ezra, 1885-1972. Kodama, Sanehide. Box 27, folder 1161. 1958. https://collections.library.yale.edu/catalog/17122584.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 27, folder 1161"])(1958)[Kodama, Sanehide]. https://collections.library.yale.edu/catalog/17122584.