Cite

P.M. "Futurism in the Dance." No source. [10708-1]

MLA

Marinetti, F. T., 1876-1944. P.M. "Futurism in the Dance." No source. [10708-1]. box 135, slide 8. no date. https://collections.library.yale.edu/catalog/10666934.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 135, slide 8"])(no date)[P.M. "Futurism in the Dance." No source. [10708-1]]. https://collections.library.yale.edu/catalog/10666934.