::::You can find out many information from History of the Mongols: from the 9th to the 19th century by Henry H. Howorth, The Cambridge history of China, Volume 2 (ed.Denis Crispin Twitchett, John King Fairbank), Christopher P.Atwood-Encyclopedia of Mongolia and the Mongol Empire,  	  
 Mongolia's culture and society by Sechin Jagchid, The Jewel Translucent Sutra: Altan Khan and the Mongols in the Sixteenth Century. I like the first three best, but it is just my opinion.