O'Gorman, J. P., & Varela, A. N. (2010). The oldest lower Upper Cretaceous plesiosaurs (Reptilia, Sauropterygia) from southern Patagonia, Argentina.
Cita Chicago Style (17a ed.)O'Gorman, José Patricio, y Augusto Nicolás Varela. The Oldest Lower Upper Cretaceous Plesiosaurs (Reptilia, Sauropterygia) from Southern Patagonia, Argentina. 2010.
Cita MLA (8a ed.)O'Gorman, José Patricio, y Augusto Nicolás Varela. The Oldest Lower Upper Cretaceous Plesiosaurs (Reptilia, Sauropterygia) from Southern Patagonia, Argentina. 2010.
Precaución: Estas citas no son 100% exactas.