McGovern, William M.
The early empires of central Asia : a study of the Scythians and the Huns and the part they played in world history with special reference to the Chinese sources
University of North Carolina Press, 1939
 Buku Teks
Wheeler, Geoffrey
Racial problems in Soviet Muslim Asia / Geoffrey Wheeler
Oxford University Press, 1962
 Buku Teks
Lattimore, Owen, 1900-
Studies in frontier history : collected papers 1928-1958
Mouton, 1962
 Buku Teks
Asian peoples and their cultures: continuity and change / edited by Sang-Bok Han
edited by Sang-Bok Han
Seoul National University Press, 1986
 Buku Teks
Trippett, Frank
The first horsemen
Time-Life Books, 1974
 Buku Teks