MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. No title. [late 1930s]. Corrected autograph manuscript. Deals with aeropainting. [10671-1]-[10679-1]. box 134, slide 51-59. no date. https://collections.library.yale.edu/catalog/10666897.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 134, slide 51-59"])(no date)[Filippo Tommaso Marinetti. No title. [late 1930s]. Corrected autograph manuscript. Deals with aeropainting. [10671-1]-[10679-1]]. https://collections.library.yale.edu/catalog/10666897.