Numero 15-16, 1929. [5558-1].
MLA
Marinetti, F. T., 1876-1944. Numero 15-16, 1929. [5558-1].. box 70, slide 58. 1929. https://collections.library.yale.edu/catalog/10657466.
APA, 6th edition
Marinetti, F. T., 1876-1944. (["box 70, slide 58"])(1929)[Numero 15-16, 1929. [5558-1].]. https://collections.library.yale.edu/catalog/10657466.