MLA

Marinetti, F. T., 1876-1944. Anonymous. “Aujourd'hui a la mamounia, la conference du Professeur Marinetti.” L'Echo du Maroc, 12/11/32. [7178-1]. box 90, slide 78. 1932. https://collections.library.yale.edu/catalog/10660060.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 90, slide 78"])(1932)[Anonymous. “Aujourd'hui a la mamounia, la conference du Professeur Marinetti.” L'Echo du Maroc, 12/11/32. [7178-1]]. https://collections.library.yale.edu/catalog/10660060.