Sumner, B. H. (1949). A short history of Russia (Rev. ed.). Harcourt, Brace and Company.
Cita Chicago Style (17a ed.)Sumner, Benedict Humphrey. A Short History of Russia. Rev. ed. New York: Harcourt, Brace and Company, 1949.
Cita MLA (9a ed.)Sumner, Benedict Humphrey. A Short History of Russia. Rev. ed. Harcourt, Brace and Company, 1949.
Precaución: Estas citas no son 100% exactas.