Saya mau tau Muller, Charles. "Daode Jing". dari Yin dan yang

Osgood, Charles E. "From Yang and Yin to and or but." Language 49.2 (1973): 380–412 . JSTOR. 16 Nov. 2008 <http://www.jstor.org/search>.

Giovanni Monastra: "The "Yin–Yang" among the Insignia of the Roman Empire?", Sophia, Vol. 6, No. 2 (2000)

Late Roman Shield Patterns. Notitia Dignitatum: Magister Peditum

Helmut Nickel: "The Dragon and the Pearl", Metropolitan Museum Journal, Vol. 26 (1991), p. 146, Fn. 5

Woolidge, Doug (June 1997). T’AI CHI The International Magazine of T’ai Chi Ch’uan Vol. 21 No. 3. Wayfarer Publications. ISSN 0730-1049.

Hoopes, Aaron (2007). Zen Yoga: A Path to Enlightenment though Breathing, Movement and Meditation. Kodansha International. ISBN 978-4-7700-3047-4.