MLA

Serge, Victor, 1890-1947. "Mort d'Arcadi Maslov," typescript carbon. Box 4, folder 225. [1941?]. https://collections.library.yale.edu/catalog/16495467.

APA, 6th edition

Serge, Victor, 1890-1947. (["Box 4, folder 225"])([1941?])["Mort d'Arcadi Maslov," typescript carbon]. https://collections.library.yale.edu/catalog/16495467.