MLA

Marinetti, F. T., 1876-1944. Anonymous. “Marinetti no Rio.” A Nacao, 23 set 1936. [8907-1] ; Anonymous. "Marinetti na redaccao do Globo." O Globo, 22 set 1936. [8907-2]. box 112, slide 47. 1936. https://collections.library.yale.edu/catalog/10663443.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 112, slide 47"])(1936)[Anonymous. “Marinetti no Rio.” A Nacao, 23 set 1936. [8907-1] ; Anonymous. "Marinetti na redaccao do Globo." O Globo, 22 set 1936. [8907-2]]. https://collections.library.yale.edu/catalog/10663443.