Lowenthal, W. (1991). There are no secrets: Professor Cheng Man-chʻing and his tai chi chuan. North Atlantic Books.
Citace podle Chicago (17th ed.)Lowenthal, Wolfe. There Are No Secrets: Professor Cheng Man-chʻing and His Tai Chi Chuan. Berkeley, Calif.: North Atlantic Books, 1991.
Citace podle MLA (8th ed.)Lowenthal, Wolfe. There Are No Secrets: Professor Cheng Man-chʻing and His Tai Chi Chuan. North Atlantic Books, 1991.
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