Cita APA (7a ed.)

Korff, S. A. b. (1922). Russia's foreign relations during the last half century. MacMillan.

Cita Chicago Style (17a ed.)

Korff, Sergie Aleksandrovich baron. Russia's Foreign Relations During the Last Half Century. New York: MacMillan, 1922.

Cita MLA (9a ed.)

Korff, Sergie Aleksandrovich baron. Russia's Foreign Relations During the Last Half Century. MacMillan, 1922.