MLA

Marinetti, F. T., 1876-1944. 167. Bologna. FTM with Tato (center) and Angelo Caviglioni. Inscribed on verso: "Tato e Papa." [Photo processed in Bologna.]. Box 50, folder 1946. 1926?. https://collections.library.yale.edu/catalog/2008899.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 50, folder 1946"])(1926?)[167. Bologna. FTM with Tato (center) and Angelo Caviglioni. Inscribed on verso: "Tato e Papa." [Photo processed in Bologna.]]. https://collections.library.yale.edu/catalog/2008899.