MLA

Marinetti, F. T., 1876-1944. L'Imbonitore. “L'America e I capelli corti.” Le Grandi Novelle, [1926]. [4561-1]. box 58, slide 21. 1926. https://collections.library.yale.edu/catalog/10655949.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 58, slide 21"])(1926)[L'Imbonitore. “L'America e I capelli corti.” Le Grandi Novelle, [1926]. [4561-1]]. https://collections.library.yale.edu/catalog/10655949.