APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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