1. Andrews, E.W. 1976. The archaeology of Quelepa, El Salvador. New Orleans: Middle American Research Institute, Tulane University.
2. Barnett, W., and J.W. Hoopes. 1995. The emergence of pottery: Technology and innovation in ancient societies. Washington, DC: Smithsonian Institution Press.
3. Baudez, C.F. 1970. Central America. New York: Barrie & Jenkins.
4. Baudez, C.F. 1976. Llanura costera del Golfo de Fonseca, Honduras. Vínculos 2 (1): 15–23.
5. Bray, W.M. 1984. Across the Darién Gap: A Colombian view of isthmian archaeology. In The archaeology of lower Central America, ed. F.W. Lange and D.Z. Stone, 305–338. Albuquerque: University of New Mexico Press.