Kwan (2001), p. 107. Kwan, Man Bun (2001). The Salt Merchants of Tianjin: State-Making and Civil Society in Late Imperial China. Honolulu: University of Hawai'i Press. ISBN0-8248-2275-7.
Scalapino (1961). Scalapino, Robert A. and George T. Yu (1961). The Chinese Anarchist Movement. Berkeley: Center for Chinese Studies, Institute of International Studies, University of California. At The Anarchist Library (Free Download). The online version is unpaginated.