Legge 1891, pp. 255–264. "Yin Fû King, or 'Classic of the Harmony of the Seen and the Unseen'". The Texts of Taoism. Vol. 2. Translated by Legge, James. Clarendon Press. 1891. pp. 255–264.
Legge 1891. "Yin Fû King, or 'Classic of the Harmony of the Seen and the Unseen'". The Texts of Taoism. Vol. 2. Translated by Legge, James. Clarendon Press. 1891. pp. 255–264.