Henning, Stanley (1994). "Ignorance, Legend and Taijiquan". Journal of the Chen Style Taijiquan Research Association of Hawaii. 2 (3). Archived from the original on 2010-01-01. Retrieved 2009-11-23.
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Henning, Stanley (1994). "Ignorance, Legend and Taijiquan". Journal of the Chen Style Taijiquan Research Association of Hawaii. 2 (3). Archived from the original on 2010-01-01. Retrieved 2009-11-23.