MLA

Pound, Ezra, 1885-1972. "Staging of the Villon": typescript, corrected. Box 32, folder 736. n.d.. https://collections.library.yale.edu/catalog/2018542.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 32, folder 736"])(n.d.)["Staging of the Villon": typescript, corrected]. https://collections.library.yale.edu/catalog/2018542.