MLA

Marinetti, F. T., 1876-1944. Luigi Russolo. "The Art of Noises, and the Futurist Noise Tuners." No source. [0567-1]-[0568-1]. box 8, slide 7-8. no date. https://collections.library.yale.edu/catalog/10649127.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 8, slide 7-8"])(no date)[Luigi Russolo. "The Art of Noises, and the Futurist Noise Tuners." No source. [0567-1]-[0568-1]]. https://collections.library.yale.edu/catalog/10649127.