MLA

Marinetti, F. T., 1876-1944. Jacques Maritain. No title. No source, 1926. Discusses Mason-Oursel and Oriental studies. [4472-1]. box 57, slide 12. 1926. https://collections.library.yale.edu/catalog/10655820.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 57, slide 12"])(1926)[Jacques Maritain. No title. No source, 1926. Discusses Mason-Oursel and Oriental studies. [4472-1]]. https://collections.library.yale.edu/catalog/10655820.