MLA

Desnos, Robert, 1900-1945, Picasso, Pablo, 1881-1973. La Riviere. [ca. 1943]. https://collections.library.yale.edu/catalog/2028889.

APA, 6th edition

Desnos, Robert, 1900-1945, & Picasso, Pablo, 1881-1973. ([ca. 1943])[La Riviere]. https://collections.library.yale.edu/catalog/2028889.