Cite

A full page of the Enemy with a drawing entitled: The Brombroosh. [274-1]

MLA

Marinetti, F. T., 1876-1944. A full page of the Enemy with a drawing entitled: The Brombroosh. [274-1]. box 4, slide 34. no date. https://collections.library.yale.edu/catalog/10648678.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 4, slide 34"])(no date)[A full page of the Enemy with a drawing entitled: The Brombroosh. [274-1]]. https://collections.library.yale.edu/catalog/10648678.