Tolong jelaskan mengenai Lihat Pula dari Kerajaan Shule

Protektorat Umum untuk Menenangkan Barat

Wechsler, Howard J.; Twitchett, Dennis C. (1979). Denis C. Twitchett; John K. Fairbank, ed. The Cambridge History of China, Volume 3: Sui and T'ang China, 589–906, Part I. Cambridge University Press. pp. 225–227. ISBN 978-0-521-21446-9.

Whitfield, Susan, ed. 2004. The Silk Road: trade, travel, war and faith. London: British Library.

Xue, Zongzheng (薛宗正). (1992). History of the Turks (突厥史). Beijing: Zhongguo shehui kexue chubanshe. ISBN 978-7-5004-0432-3; OCLC 28622013.