1 Nie, Zuoping, Li, Hua. Xi yang xia de jian dui : Zheng He xia Xi yang 600 zhou nian ping pan / Nie Zuoping, Li Hua zhu Chengdu : 2005 Ba Shu shu she 4, 4, 281 p. : Di 1 ban. 780659731 Includes bibliographical references (p. 281)