Lucas, S. G., & Alvarado, G. E. (2010). Fossil proboscidea from the upper cenozoic of central america: Taxonomy, evolutionary and paleobiogeographic significance.
استشهاد بنمط شيكاغوLucas, Spencer G., و Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. 2010.
MLA استشهادLucas, Spencer G., و Guillermo E. Alvarado. Fossil Proboscidea From the Upper Cenozoic of Central America: Taxonomy, Evolutionary and Paleobiogeographic Significance. 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.