Cite

Anonymous. “Natura e macchina.” No source, [1928]. [7440-1]

MLA

Marinetti, F. T., 1876-1944. Anonymous. “Natura e macchina.” No source, [1928]. [7440-1]. box 94, slide 20. 1928. https://collections.library.yale.edu/catalog/10660490.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 94, slide 20"])(1928)[Anonymous. “Natura e macchina.” No source, [1928]. [7440-1]]. https://collections.library.yale.edu/catalog/10660490.