Try this for some info.

This article listed some books you may find useful.

To the author’s credit, the review of secondary sources is excellent. This is a valuable article and remains significant. One important point raised by this article should be restated as it is too often overlooked. There are several translations of primary sources for names in Chinggisid period available to the casual researcher aside from The Secret History. These include The Successors of Genghis Khan by Rashid al-Din, and The History of the World Conqueror by Juvaini, both translated into English by J. A. Boyle. These secondary sources are just as important as The Secret History.