Schele, Linda, and David A. Freidel. 1990. A Forest of Kings: The Untold Story of the Ancient Maya. New York: William Morrow and Company, Inc.: 50, Fig. 34
Images of GIII as Sungod, God of Number 4 as Sungod; glyphic name; GIII as Ajaw K'in; Sungod pectoral; Sungod wearing K'in headdress.