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White, T. D.; Asfaw, B.; Beyene, Y.; Haile-Selassie, Y.; Lovejoy, C. O.; Suwa, G.; Woldegabriel, G. (2009). «Ardipithecus ramidus and the Paleobiology of Early Hominids». Science. 326 (5949): 75–86. Bibcode:2009Sci...326...75W. PMID19810190. doi:10.1126/science.1175802
White, T. D.; Asfaw, B.; Beyene, Y.; Haile-Selassie, Y.; Lovejoy, C. O.; Suwa, G.; Woldegabriel, G. (2009). «Ardipithecus ramidus and the Paleobiology of Early Hominids». Science. 326 (5949): 75–86. Bibcode:2009Sci...326...75W. PMID19810190. doi:10.1126/science.1175802
Sayers, Ken; Raghanti, Mary Ann; Lovejoy, C. Owen (2012). «Human Evolution and the Chimpanzee Referential Doctrine». Annual Review of Anthropology. 41: 119–38. SSRN2158266. doi:10.1146/annurev-anthro-092611-145815