MLA

Marinetti, F. T., 1876-1944. Unsigned article. “Depero, stile futurista.” Il 1919, [1926]. [4641-1]-[4642-1]. box 59, slide 21-22. 1926. https://collections.library.yale.edu/catalog/10656067.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 59, slide 21-22"])(1926)[Unsigned article. “Depero, stile futurista.” Il 1919, [1926]. [4641-1]-[4642-1]]. https://collections.library.yale.edu/catalog/10656067.