1. Wilhelm, R. I Ching Introduction. English translation by Cary F. Baynes; HTML edition by Dan Baruth. [accessed 20.01.08].
2. Chiao-cheng t'u-chu pa-shih-i Nan-Ching 3rd volume;Chang,1912
3. Nan-Ching — The classic of difficult issues;Unschuld,1986
4. Acupuncture point combination;Ross,2004
5. Gatherings from Eminent Acupuncturists-Zhen Jiu Ju Ying;Gao-Wu,1980