"Terracotta", p. 341, Delahunty, Andrew, From Bonbon to Cha-cha: Oxford Dictionary of Foreign Words and Phrases, 2008, OUP Oxford,
Peek, Philip M., and Yankah, African Folklore: An Encyclopedia, 2004, Routledge, ISBN1135948720, 9781135948726, google books
jstor.org
Scultz, 167; Hobson, R.L. "A New Chinese Masterpiece in the British Museum." The Burlington Magazine for Connoisseurs, Vol. 25, No. 134 (May, 1914), p. 70, JSTOR