MLA

Marinetti, F. T., 1876-1944. Filippo Tommaso Marinetti. “Depero” No source, [1926]. With two illustrations by Depero. [4515-1]. box 57, slide 55. 1926. https://collections.library.yale.edu/catalog/10655878.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 57, slide 55"])(1926)[Filippo Tommaso Marinetti. “Depero” No source, [1926]. With two illustrations by Depero. [4515-1]]. https://collections.library.yale.edu/catalog/10655878.