Cite

Anonymous. “Filippo Tomaso Marinetti.” No source. [8590-1]

MLA

Marinetti, F. T., 1876-1944. Anonymous. “Filippo Tomaso Marinetti.” No source. [8590-1]. box 108, slide 50. no date. https://collections.library.yale.edu/catalog/10662886.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 108, slide 50"])(no date)[Anonymous. “Filippo Tomaso Marinetti.” No source. [8590-1]]. https://collections.library.yale.edu/catalog/10662886.