Nie 2015, p. 374. Nie, Lina (January 2015), "A Grand Strategy or a Military Operation? A Reconsideration of the Liangzhou Campaign of 1081", Journal of Song-Yuan Studies, 45 (1): 371–385, doi:10.1353/sys.2015.0010
Nie 2015, p. 376. Nie, Lina (January 2015), "A Grand Strategy or a Military Operation? A Reconsideration of the Liangzhou Campaign of 1081", Journal of Song-Yuan Studies, 45 (1): 371–385, doi:10.1353/sys.2015.0010