http://www.jstor.org/stable/41930343?seq=17
http://en.wikipedia.org/wiki/Mongol_Empire
http://en.wikipedia.org/wiki/Ilkhanate#cite_note-2
http://www.newworldencyclopedia.org/entry/Il-Khan_dynasty
http://www.allempires.com/article/?q=The_Mongol_Empire
http://en.wikipedia.org/wiki/Mongol_Empire
http://asianhistory.about.com/od/Genghis_and_Mongols/ss/The-Mongol-Empire.htm
http://www.jstor.org/stable/23732931
http://en.wikipedia.org/wiki/Khanate
http://ringmar.net/irhistory/index.php/6-the-mongol-khanates
http://en.wikipedia.org/wiki/Chagatai_Khanate
http://en.wikipedia.org/wiki/Golden_Horde
http://en.wikipedia.org/wiki/Yuan_dynasty
http://asianhistory.about.com/od/Genghis_and_Mongols/ss/The-Mongol-Empire.htm
http://www.biography.com/people/kublai-khan-9369657#background