MLA

Marinetti, F. T., 1876-1944. [Filippo Tommaso Marinetti?]. No title. Typed manuscript on Guglielmo Giannini's Milliardo. [10599-1]-[10601-1]. box 133, slide 59-61. no date. https://collections.library.yale.edu/catalog/10666825.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 133, slide 59-61"])(no date)[[Filippo Tommaso Marinetti?]. No title. Typed manuscript on Guglielmo Giannini's Milliardo. [10599-1]-[10601-1]]. https://collections.library.yale.edu/catalog/10666825.