MLA

Marinetti, F. T., 1876-1944. Advertisment for Atilio Garcia y Mellid. “El Futurismo italiano.” Empresa Mundial Seleccion, Buenos Aires, 27 Oct 1921. [2873-1]. box 37, slide 13. 1921. https://collections.library.yale.edu/catalog/10653111.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 37, slide 13"])(1921)[Advertisment for Atilio Garcia y Mellid. “El Futurismo italiano.” Empresa Mundial Seleccion, Buenos Aires, 27 Oct 1921. [2873-1]]. https://collections.library.yale.edu/catalog/10653111.