MLA

Marinetti, F. T., 1876-1944. Guilhermo de Alameida. “Les Discoboles.” De Groep Klaxon. Sao Paulo, 1922. [2908-1]-[2909-1]. box 37, slide 48-49. 1922. https://collections.library.yale.edu/catalog/10653178.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 37, slide 48-49"])(1922)[Guilhermo de Alameida. “Les Discoboles.” De Groep Klaxon. Sao Paulo, 1922. [2908-1]-[2909-1]]. https://collections.library.yale.edu/catalog/10653178.