ISBN 0-88411-798-7* Rene Grousset - "Empire of Steppes", Rutgers Univ Pr,New Jersey, U.S.A, 1988 ISBN 0-8135-1304-9* John Masson Smith, Jr. - "MONGOL ARMIES AND INDIAN CAMPAIGNS", University of California, Berkeley [http://www.mongolianculture.com/MONGOL-ARMIES.htm]* "Chormaqan Noyan: The First Mongol Military Governor in the Middle East" by Timothy May [http://radar.ngcsu.edu/~tmmay/Chormaqan_thesis.pdf]FURTHER READING:* J.A.
ISBN 0884117987* Rene Grousset — "Empire of Steppes", Rutgers Univ Pr,New Jersey, U.S.A, 1988 ISBN 0813513049* John Masson Smith, Jr. — "MONGOL ARMIES AND INDIAN CAMPAIGNS", University of California, Berkeley ([http://www.mongolianculture.com/MONGOL-ARMIES.htm])* "Chormaqan Noyan: The First Mongol Military Governor in the Middle East" by Timothy May ([http://radar.ngcsu.edu/~tmmay/Chormaqan_thesis.pdf])