MLA

Marinetti, F. T., 1876-1944. Theo Van Doesburg. “Aanteekeningen over de nieuwe muziek.” De Stijl, Nov 1919. [1686-01]-[1687-01]. box 22, slide 26-27. 1919. https://collections.library.yale.edu/catalog/10650950.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 22, slide 26-27"])(1919)[Theo Van Doesburg. “Aanteekeningen over de nieuwe muziek.” De Stijl, Nov 1919. [1686-01]-[1687-01]]. https://collections.library.yale.edu/catalog/10650950.