Tham khảo Pax_Mongolica

  1. Michael Prawdin. The Mongol Empire: its rise and legacy. New Brunswick: Transaction, 2006. p.347
  2. Charlton M. Lewis and W. Scott Morton. China: Its History and Culture (Fourth Edition). New York: McGraw-Hill, 2004. Print. p.121
  3. Laurence Bergreen. Marco Polo: From Venice to Xanadu. New York: Vintage, 2007. Print. p.27–28
  4. David Morgan (historian). The Mongols second edition. Oxford: OUP, 2007. p.55
  5. Amy Chua. Day of Empire: How hyperpowers rise to global dominance, and why they fall. New York: Random House, 2007. p.95
  6. Jack Weatherford. Genghis Khan and the Making of the Modern World. New York: Three Rivers Press, 2004. p. 28
  7. 1 2 3 All Empires: Online History Community. "The Mongol Empire." Feb. 2007. Web. ngày 22 tháng 11 năm 2009