MLA

Marinetti, F. T., 1876-1944. Certificate given to Marinetti after the crossing of the Equator. 8 mag 1926. [4593-1]. box 58, slide 53. 1926. https://collections.library.yale.edu/catalog/10656003.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 58, slide 53"])(1926)[Certificate given to Marinetti after the crossing of the Equator. 8 mag 1926. [4593-1]]. https://collections.library.yale.edu/catalog/10656003.