MLA

Marinetti, F. T., 1876-1944. 173. Modena. FTM talking in a group of young men. Inscribed on verso: "Arditi di Modena.". Box 50, folder 1946. 1927 Apr 9. https://collections.library.yale.edu/catalog/2008905.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["Box 50, folder 1946"])(1927 Apr 9)[173. Modena. FTM talking in a group of young men. Inscribed on verso: "Arditi di Modena."]. https://collections.library.yale.edu/catalog/2008905.