MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. “Il teatro futurista italiano imitato dagli americani.” [1941?]. Corrected typed manuscript. [10609-1]-[10610-1]. box 133, slide 69-70. 1941?. https://collections.library.yale.edu/catalog/10666835.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 133, slide 69-70"])(1941?)[Filippo Tommaso Marinetti. “Il teatro futurista italiano imitato dagli americani.” [1941?]. Corrected typed manuscript. [10609-1]-[10610-1]]. https://collections.library.yale.edu/catalog/10666835.