Korff, S. A. b. (1922). Russia's foreign relations during the last half century. MacMillan.
Citace podle Chicago (17th ed.)Korff, Sergie Aleksandrovich baron. Russia's Foreign Relations During the Last Half Century. New York: MacMillan, 1922.
Citace podle MLA (9th ed.)Korff, Sergie Aleksandrovich baron. Russia's Foreign Relations During the Last Half Century. MacMillan, 1922.
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