MLA

Marinetti, F. T., 1876-1944. Autograph manuscript notes about Eugene O'Neill, identified as "O Neal futurista americano..." Also includes outline for essay on simultaneity of time and space. 8 p.. Box 29, folder 1441. 1895-1944. https://collections.library.yale.edu/catalog/16687033.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 29, folder 1441"])(1895-1944)[Autograph manuscript notes about Eugene O'Neill, identified as "O Neal futurista americano..." Also includes outline for essay on simultaneity of time and space. 8 p.]. https://collections.library.yale.edu/catalog/16687033.