MLA

Pound, Ezra, 1885-1972. Chinese & Japanese Poetry: Synopsis of Lectures: autograph ms., 3 Vols.. Box 99, folder 4217-4219. n.d.. https://collections.library.yale.edu/catalog/10834043.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 99, folder 4217-4219"])(n.d.)[Chinese & Japanese Poetry: Synopsis of Lectures: autograph ms., 3 Vols.]. https://collections.library.yale.edu/catalog/10834043.