"Problèmes du socialisme," typescript carbon, corrected
MLA
Serge, Victor, 1890-1947. "Problèmes du socialisme," typescript carbon, corrected. Box 5, folder 250. 1945 Feb. https://collections.library.yale.edu/catalog/16495475.
APA, 6th edition
Serge, Victor, 1890-1947. (["Box 5, folder 250"])(1945 Feb)["Problèmes du socialisme," typescript carbon, corrected]. https://collections.library.yale.edu/catalog/16495475.