MLA

Marinetti, F. T., 1876-1944. Invitation to the presentation by Marinetti on 3 dic 1931 of “I Futursimultanisti.” [6474-1]. box 82, slide 14. 1931. https://collections.library.yale.edu/catalog/10658854.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 82, slide 14"])(1931)[Invitation to the presentation by Marinetti on 3 dic 1931 of “I Futursimultanisti.” [6474-1]]. https://collections.library.yale.edu/catalog/10658854.