MLA

Marinetti, F. T., 1876-1944. Original caricature of Marinetti by amleto Sammarco, San Paulo, 2/6/1926. Gouache on paper. [4600-1]. box 58, slide 60. 1926. https://collections.library.yale.edu/catalog/10656013.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 58, slide 60"])(1926)[Original caricature of Marinetti by amleto Sammarco, San Paulo, 2/6/1926. Gouache on paper. [4600-1]]. https://collections.library.yale.edu/catalog/10656013.