Παραπομπή APA

Lucas, S. G., & Alvarado, G. E. (2010). Fossil proboscidea from the upper cenozoic of central america: Taxonomy, evolutionary and paleobiogeographic significance.

Παραπομπή Chicago Style

Lucas, Spencer G., και Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. 2010.

Παραπομπή MLA

Lucas, Spencer G., και Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. 2010.

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