MLA

Marinetti, F. T., 1876-1944. Unsigned. "Oggi: 2a serata futurista. Parole, scarpe, cappelli e ceffoni ... in libertà ." Fanfulla, Brazil, 27 maggio 1926. [04800-1]. box 61, slide 20. 1926. https://collections.library.yale.edu/catalog/10656323.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 61, slide 20"])(1926)[Unsigned. "Oggi: 2a serata futurista. Parole, scarpe, cappelli e ceffoni ... in libertà ." Fanfulla, Brazil, 27 maggio 1926. [04800-1]]. https://collections.library.yale.edu/catalog/10656323.