MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. "La Guerra futura." Gazzetta del Popolo, [gen. 1929]. [5534-1]. box 70, slide 34. 1929. https://collections.library.yale.edu/catalog/10657425.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 70, slide 34"])(1929)[Filippo Tommaso Marinetti. "La Guerra futura." Gazzetta del Popolo, [gen. 1929]. [5534-1]]. https://collections.library.yale.edu/catalog/10657425.