1. The Development of Psychiatric Concepts in Traditional Chinese Medicine
2. I. Veith: Huang ti Nei Ching Su Wen (The Yellow Emperor's Classic of Internal Medicine (Berkeley & Los Angeles: University of California Press, 1966). 12.
3. C.L. Liu: The Philosophy of Nei Jing and the Method of Chinese Medicine ( Beijing: Scientific Publishing House, 1985), 8-12.
4. C.L. Liu: ibid, 46-51.