MLA

Marinetti, F. T., 1876-1944. Unsigned and untitled clipping. Sant'Elia, anno III, no 68, 1 giugno 1934. [8634-1]. box 109, slide 14. 1934. https://collections.library.yale.edu/catalog/10662942.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 109, slide 14"])(1934)[Unsigned and untitled clipping. Sant'Elia, anno III, no 68, 1 giugno 1934. [8634-1]]. https://collections.library.yale.edu/catalog/10662942.