Sources

Cammann, Schuyler. Chinese Mandarin Squares, Brief Catalogue of the Letcher Collection. University Museum Bulletin, (1953, June), University of Pennsylvania, Philadelphia, Vol. 17, No. 3. Pages 5-15, 29

Jansen, Eva R. The Book of Buddhas, Ritual Symbolism used on Buddhist Statuary and Ritual Objects. Diever, Holland: Binkey Kok, 1990. Pages 30-32

Auboyer Jeannine, Beurdeley M, boisselier J, Rousset H, Massonaud C. Oriental Art: A Handbook of Styles and Forms. Fribourg, Switzerland: Office du Livre, (1980). Translated by Elizabeth & Richard Bartlett, New York: Rizzoli, (1980). Pages 472-477

Prometheus Press. New Larousse Encyclopedia of Mythology. Hong Kong: Toppan, 1959. Pages 393-394