MLA

Marinetti, F. T., 1876-1944. Anonymous. No title. Buenos Aires, set 1936. Deals with Marinetti's problems at the Congreso de Escritores. [8747-1]. box 110, slide 47. 1936. https://collections.library.yale.edu/catalog/10663097.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 110, slide 47"])(1936)[Anonymous. No title. Buenos Aires, set 1936. Deals with Marinetti's problems at the Congreso de Escritores. [8747-1]]. https://collections.library.yale.edu/catalog/10663097.