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↑ William Joseph Haas (1996). China voyager: Gist Gee's life in Science. M.E. Sharpe. p. 59. ISBN1-56324-675-9.
↑ John King Fairbank, Merle Goldman (2006). China: a new history (2nd ed.). Harvard University Press. p. 212. ISBN0-674-01828-1.
↑ Maochun Yu, The Taiping Rebellion: A Military Assessment of Revolution and Counterrevolution, in A Military History of China 149 (David A. Graff & Robin Higham eds., 2002)
↑ David Hartill (2005). Cast Chinese Coins. Trafford Publishing. p. 425. ISBN1-4120-5466-4.
↑ Pamela Kyle Crossley (1991). Orphan warriors: three Manchu generations and the end of the Qing world (reprint, illustrated ed.). Princeton University Press. p. 125. ISBN0-691-00877-9.