Barrantes Mesén, R., Smouse, P. E., Mohrenweiser, H. W., Gershowitz, H., Azofeifa Navas, J., Arias, T. D., & Neel, J. V. (1990). Microevolution in lower Central America: Genetic characterization of the Chibcha-speaking groups of Costa Rica and Panama, and a consensus taxonomy based on genetic and linguistic affinity.

Barrantes Mesén, Ramiro, Peter E. Smouse, Harvey W. Mohrenweiser, Henry Gershowitz, Jorge Azofeifa Navas, Tomas D. Arias, và James V. Neel. Microevolution in Lower Central America: Genetic Characterization of the Chibcha-speaking Groups of Costa Rica and Panama, and a Consensus Taxonomy Based On Genetic and Linguistic Affinity. 1990.

Barrantes Mesén, Ramiro, et al. Microevolution in Lower Central America: Genetic Characterization of the Chibcha-speaking Groups of Costa Rica and Panama, and a Consensus Taxonomy Based On Genetic and Linguistic Affinity. 1990.