Tolong jelaskan mengenai Liek Pulo dari Kuil Putuo Zongcheng dalam bahasa minangkabau

Foret, Philippe. (2000). Mapping Chengde: The Qing Landscape Enterprise. Honolulu: University of Hawaii Press. ISBN0-8248-2293-5 (Paperback).

Rawski, Evelyn Sakakida. (1998). The Last Emperors: A Social History of Qing Imperial Institutions. Berkeley: University of California Press. ISBN0-520-22837-5 (Paperback).

Montell, Gösta: The Lama Temple Potala of Jehol. Plan of the Monastery-Ground. In: Geografiska Annaler, Band 17, Supplement: Hyllningsskrift Tillagnad Sven Hedin (1935), S. 175-184. (Putuo Zongcheng Temple)

Hedin, Sven and Bergman, Folke: History of the expedition in Asia 1927-1935, in: Reports from the scientific expedition to the north-western provinces of China under leadership of Dr. Sven Hedin. The Sino-Swedish expedition. Publication 24: Part II 1928–1933. Stockholm 1943-1945, page 121ff. and page 184ff.. See also: Sino-Swedish Expedition of Sven Hedin and the Century of Progress Exposition in Chicago 1933/1934 (German).

Montell, Gösta, Hedin, Sven: The Chinese lama temple Potala of Jehol. Exhibition of historical and ethnographical collections. Made by Dr. Gösta Montell, member of Dr. Sven Hedin's Expeditions, and donated by Vincent Bendix. Chicago: Century of Progress Exposition 1932.