MLA

Marinetti, F. T., 1876-1944. A.A. “Marinetti a Parigi.” Tribuna d'Italia, Parigi, [1938]. Caricature of Marinetti by Giacomo Balla. [9600-1]. box 121, slide 20. 1938. https://collections.library.yale.edu/catalog/10664941.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 121, slide 20"])(1938)[A.A. “Marinetti a Parigi.” Tribuna d'Italia, Parigi, [1938]. Caricature of Marinetti by Giacomo Balla. [9600-1]]. https://collections.library.yale.edu/catalog/10664941.