MLA

Marinetti, F. T., 1876-1944. Twenty-two clippings announcing the “arrival” of Marinetti in East Africa, 5 Nov 1935. [7888-1]. box 99, slide 68. 1935. https://collections.library.yale.edu/catalog/10661514.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 99, slide 68"])(1935)[Twenty-two clippings announcing the “arrival” of Marinetti in East Africa, 5 Nov 1935. [7888-1]]. https://collections.library.yale.edu/catalog/10661514.