MLA

Marinetti, F. T., 1876-1944. List of 'simultaneita musicali' di Cralo Brizzi to accompany excerpts from Il Poema Africano of Marinetti. [9494-1]. box 119, slide 74. no date. https://collections.library.yale.edu/catalog/10664731.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 119, slide 74"])(no date)[List of 'simultaneita musicali' di Cralo Brizzi to accompany excerpts from Il Poema Africano of Marinetti. [9494-1]]. https://collections.library.yale.edu/catalog/10664731.