Cite

Canto XIII or XIV: autograph ms.

MLA

Pound, Ezra, 1885-1972. Canto XIII or XIV: autograph ms.. Box 71, folder 3170. n.d.. https://collections.library.yale.edu/catalog/16054037.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 71, folder 3170"])(n.d.)[Canto XIII or XIV: autograph ms.]. https://collections.library.yale.edu/catalog/16054037.