MLA

Marinetti, F. T., 1876-1944. Anton Giulio Bragaglia. "I viaggi dell'Arte." Critica Fascista, [1935]. Bragaglia criticizes the Futurists for not going forward. [5380-1]. box 68, slide 40. 1935. https://collections.library.yale.edu/catalog/10657187.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 68, slide 40"])(1935)[Anton Giulio Bragaglia. "I viaggi dell'Arte." Critica Fascista, [1935]. Bragaglia criticizes the Futurists for not going forward. [5380-1]]. https://collections.library.yale.edu/catalog/10657187.