The Origin of Wealth and Hierarchy in the Central Region of Panama (12,000-2,000 BP), with Observations on Its Relevance to the History and Phylogeny of Chibchan-Speaking Polities in Panama and ElsewhereDumbarton Oaks243–316
Cooke, Richard G. and Ranere, Anthony J. 1992. "The Origin of Wealth and Hierarchy in the Central Region of Panama (12,000-2,000 BP), with Observations on Its Relevance to the History and Phylogeny of Chibchan-Speaking Polities in Panama and Elsewhere." In Wealth and Hierarchy in the Intermediate Area. Lange, Frederick W., editor. 243–316. Washington, D.C.: Dumbarton Oaks.