MLA

Serge, Victor, 1890-1947. "Contre la calomnie," typescript, corrected. Box 4, folder 207. 1937 Jan 1. https://collections.library.yale.edu/catalog/16495461.

APA, 6th edition

Serge, Victor, 1890-1947. (["Box 4, folder 207"])(1937 Jan 1)["Contre la calomnie," typescript, corrected]. https://collections.library.yale.edu/catalog/16495461.