MLA

Marinetti, F. T., 1876-1944. Poster announcing a conference by Marinetti in Parma. Conference on Nov. 15, 1926. [05066-1]. box 64, slide 46. 1926. https://collections.library.yale.edu/catalog/10656707.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 64, slide 46"])(1926)[Poster announcing a conference by Marinetti in Parma. Conference on Nov. 15, 1926. [05066-1]]. https://collections.library.yale.edu/catalog/10656707.