MLA

Eliot, T. S. (Thomas Stearns), 1888-1965. "Bolo" poems: autograph ms.. Box 144 | Folder 6322. n.d.. https://collections.library.yale.edu/catalog/2000074.

APA, 6th edition

Eliot, T. S. (Thomas Stearns), 1888-1965. (["Box 144 | Folder 6322"])(n.d.)["Bolo" poems: autograph ms.]. https://collections.library.yale.edu/catalog/2000074.