Lucas, S. G., & Alvarado, G. E. (2010). Fossil proboscidea from the upper cenozoic of central america: Taxonomy, evolutionary and paleobiogeographic significance. Universidad de Costa Rica.
Chicago Style CitationLucas, Spencer G., and Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. Universidad de Costa Rica, 2010.
MLA CitationLucas, Spencer G., and Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. Universidad de Costa Rica, 2010.
Warning: These citations may not always be 100% accurate.