MLA

Marinetti, F. T., 1876-1944. Bogdan Radica. "Svjedoci Danasnje Italije Marinetti." Obzor. Text in Serbo-Croatian. [05221-1]. box 66, slide 41. no date. https://collections.library.yale.edu/catalog/10656929.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 66, slide 41"])(no date)[Bogdan Radica. "Svjedoci Danasnje Italije Marinetti." Obzor. Text in Serbo-Croatian. [05221-1]]. https://collections.library.yale.edu/catalog/10656929.