MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. “Contro l'esterofilia.” No source, [1937]. [8965-1]. box 113, slide 25. 1937. https://collections.library.yale.edu/catalog/10663522.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 113, slide 25"])(1937)[Filippo Tommaso Marinetti. “Contro l'esterofilia.” No source, [1937]. [8965-1]]. https://collections.library.yale.edu/catalog/10663522.