MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. "Pittura Futurista." [1940s]. Corrected autograph manuscript. Deals with Futurism and painting. [10747-1]-[10750-1]. box 135, slide 46-50. no date. https://collections.library.yale.edu/catalog/10666972.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 135, slide 46-50"])(no date)[Filippo Tommaso Marinetti. "Pittura Futurista." [1940s]. Corrected autograph manuscript. Deals with Futurism and painting. [10747-1]-[10750-1]]. https://collections.library.yale.edu/catalog/10666972.