MLA

Marinetti, F. T., 1876-1944. 250. FTM speaking. Inscribed on verso: "Marinetti declama al fronte d'Africa.". Box 51, folder 1954. 1935 October - 1936 April. https://collections.library.yale.edu/catalog/2009077.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 51, folder 1954"])(1935 October - 1936 April)[250. FTM speaking. Inscribed on verso: "Marinetti declama al fronte d'Africa."]. https://collections.library.yale.edu/catalog/2009077.