253. FTM on a mule. Inscribed on verso: "Marinetti e la sua mula."
MLA
Marinetti, F. T., 1876-1944. 253. FTM on a mule. Inscribed on verso: "Marinetti e la sua mula.". Box 51, folder 1954. 1935 October - 1936 April. https://collections.library.yale.edu/catalog/2009079.
APA, 6th edition
Marinetti, F. T., 1876-1944. (["Box 51, folder 1954"])(1935 October - 1936 April)[253. FTM on a mule. Inscribed on verso: "Marinetti e la sua mula."]. https://collections.library.yale.edu/catalog/2009079.