MLA

Marinetti, F. T., 1876-1944. Dorothy Mills. "Dunkle Gotter." No source, 1929. German translation of novel. [5444-1]. box 69, slide 24. 1929. https://collections.library.yale.edu/catalog/10657298.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 69, slide 24"])(1929)[Dorothy Mills. "Dunkle Gotter." No source, 1929. German translation of novel. [5444-1]]. https://collections.library.yale.edu/catalog/10657298.