Schele, Linda, and Peter Mathews. 1998. The Code of Kings: The Language of Seven Sacred Maya Temples and Tombs. New York: Scribner: 8:Fig.1.25 (top and right texts)
Schele, Linda, and Peter Mathews. 1998. The Code of Kings: The Language of Seven Sacred Maya Temples and Tombs. New York: Scribner: 8: Fig.2.7;
L. Schele and P. Mathews, Code of Kings. 1998: Fig.3.7 (West Alfarda)