MLA

Marinetti, F. T., 1876-1944. Carl Kiersmeier. "Futurismen." Hver 8 Dag, 9 mai 1919. With 2 photos of Boccioni. [1167-1]. box 15, slide 67. 1919. https://collections.library.yale.edu/catalog/10650249.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 15, slide 67"])(1919)[Carl Kiersmeier. "Futurismen." Hver 8 Dag, 9 mai 1919. With 2 photos of Boccioni. [1167-1]]. https://collections.library.yale.edu/catalog/10650249.