(en) Yingxing Song, traduction et introduction de E. Tu Zen Sun et Shiou-Chuan Sun. T'ien-Kung K'ai-Wu; Chinese Technology in the Seventeenth Century. (University Park: Pennsylvania State University, 1966). Réimpression : New York, Dovres Dover, 1997. (ISBN978-0486295930) Châpitre V, "Salt," p. 109-113
(en) Tora Yoshida, traduit et révisé par Hans Ulrich Vogel, Salt Production Techniques in Ancient China: The Aobo Tu (Leiden; New York: E.J. Brill, 1993)p. 4
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Elise Hoi, "Salt of the Early Civilizations: Case Studies on China," Penn History Review 18.2 (Spring 2011): 69-99. [1]