MLA

Marinetti, F. T., 1876-1944. Nostre futuriste di Milano, Bologna, Padova. “Piazza Bra' e Arena.” No source, [1933]. [7445-1]. box 94, slide 25. 1933. https://collections.library.yale.edu/catalog/10660505.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 94, slide 25"])(1933)[Nostre futuriste di Milano, Bologna, Padova. “Piazza Bra' e Arena.” No source, [1933]. [7445-1]]. https://collections.library.yale.edu/catalog/10660505.