MLA

Marinetti, F. T., 1876-1944. Anonymous. “Nel mondo della musica. Divagazioni musicali.” Augustea, [1935]. [7897-1]-[7898-1]. box 99, slide 77-78. 1935. https://collections.library.yale.edu/catalog/10661538.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 99, slide 77-78"])(1935)[Anonymous. “Nel mondo della musica. Divagazioni musicali.” Augustea, [1935]. [7897-1]-[7898-1]]. https://collections.library.yale.edu/catalog/10661538.