^ 3.03.1Sharer, Robert J.; Traxler, Loa P. The Ancient Maya. Stanford University Press. 2006.
^ 4.04.1Tokovinine, Alexandre; Fialko, Vilma. Stela 45 of Naranjo and the Early Classic Lords of Sa'aal. The PARI Journal. 2007.
文献
Lothrop, S. K. A Chronological Link Between Maya and Olmeca Art. American Anthropologist. 1941, 43 (3): 419–421. doi:10.1525/aa.1941.43.3.02a00050.
Morley, Sylvanus G. The Inscriptions of Naranjo, Northern Guatemala. American Anthropologist. 1909, 11 (4): 543–562. doi:10.1525/aa.1909.11.4.02a00020.