Cite

Russian [or Bulgarian] article. “Marinetti and Futurism.” No source, [Mar 1933]. [6607-1]

MLA

Russian [or Bulgarian] Article. “Marinetti and Futurism.” No Source, [Mar 1933]. [6607-1]. 1933. https://collections.library.yale.edu/catalog/10659093.

APA, 6th edition

Russian [or Bulgarian] article. “Marinetti and Futurism.” No source, [Mar 1933]. [6607-1]. (1933). [Scrapbooks]. https://collections.library.yale.edu/catalog/10659093.