A.L. Smith, Excavations at Altar de Sacrificios, Peabody Papers 62, No. 2, 1972: 259R;
E.W. Adams, The Ceramics of Altar de Sacrificios, Peabody Papers 63, No. 1, 1971;
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.: 83, Fig. 2.24