Vernadsky, George
The origins of Russia
At The Clarendon Press, 1959
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Vernadsky, George
Mongols and Russia
Yele University Press, 1953
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Fennell, John
Crisis of medieval Russia 1200-1304
Longman, 1983
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Saunders, David, 1940-
Russia in the age of reaction and reform 1801-1881
Longman, 1992
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Laserson, Max M.
American impact on Russia : diplomatic ideological 1784-1917
Macmillan, 1950
 Buku Teks SO