APA

Sumner B. H., . (1949). A short history of Russia. New York: Harcourt, Brace.

Chicago

Sumner Benedict Humphrey, . 1949. A short history of Russia. New York: Harcourt, Brace.

Harvard

Sumner B. H., . (1949). A short history of Russia. New York: Harcourt, Brace.

MLA

Sumner Benedict Humphrey, . A short history of Russia. New York: Harcourt, Brace. 1949.