Coba jelasin Pemerintah Xia Barat dari Xia Barat dalam bahasa melayu dong

Dorje, Gyurme (1999). Footprint Tibet Handbook with Bhutan. 2nd Edition. Footprint Handbooks, Bath, England. ISBN 1-900949-33-4.

Leffman, David, et al (2005). The Rough Guide to China. 4th Edition. Rough Guides, New York, London, Delhi. ISBN 978-1-84353-479-2.

Kwanten, Luc. "Chingis Kan's Conquest of Tibet, Myth or Reality". Journal of Asian History 8.1 (1974): 17–23.

Ferenczy, Mary: "The Formation of Tangut Statehood as Seen by Chinese Historiographers". In: Louis Ligeti (editor): Tibetan and Buddhist Studies Commemorating the 200th Anniversary of the Birth of Alexander Csoma de Körös. Vol. 1, Akadémiai Kiadó, Budapest 1984, ISBN 963-05-3902-0, p. 241–249.

Stein, R. A. (1972). Tibetan Civilization. Faber and Faber. London and Stanford University Press. ISBN 0-8047-0806-1 (cloth); ISBN 0-8047-0901-7 (paper).