MLA

Marinetti, F. T., 1876-1944. Anton Giulio Bragaglia. “Le origini della aeropittura.” No source, [1933 or 1934]. [7568-1]. box 95, slide 68. 1933. https://collections.library.yale.edu/catalog/10660742.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 95, slide 68"])(1933)[Anton Giulio Bragaglia. “Le origini della aeropittura.” No source, [1933 or 1934]. [7568-1]]. https://collections.library.yale.edu/catalog/10660742.