Handbook on Chinese Art Symbols, Alexander, Mary and Frances, Press of Von Boeckmann- Jones Co., Texas, 1958
Encyclopedia of Chinese Symbolism and Art Motives, Williams, C.A.S, Julian Press, New York, 1960
Decorative Motives of Oriental Art, Katherine M. Ball, John Lane The Bodley Head, London & New York, 1927
Early Chinese Symbols and Literature: Vestiges and Speculations, E. Weyhe, New York, 1942