MLA

Marinetti, F. T., 1876-1944. Anonymous. No title, with sections “Momento traditore” and “Momento vittorioso.” No source, [1934]. [6935-1]. box 87, slide 75. 1934. https://collections.library.yale.edu/catalog/10659630.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 87, slide 75"])(1934)[Anonymous. No title, with sections “Momento traditore” and “Momento vittorioso.” No source, [1934]. [6935-1]]. https://collections.library.yale.edu/catalog/10659630.