Anonymous. “Umberto Boccioni. Biographie.” No source, no date. [06624-2]
MLA
Anonymous. “Umberto Boccioni. Biographie.” No Source, No Date. [06624-2]. 0AD. https://collections.library.yale.edu/catalog/10659121.
APA, 6th edition
Anonymous. “Umberto Boccioni. Biographie.” No source, no date. [06624-2]. (0 C.E.). [Scrapbooks]. https://collections.library.yale.edu/catalog/10659121.