van Dijk, Peter Paul; Iverson, John B.; Shaffer, H. Bradley; Bour, Roger; Rhodin, Anders G. J. (2011). "Turtles of the World, 2011 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status". En Rhodin, Anders G.J.; Pritchard, Peter C. H.; van Dijk, Peter Paul; Saumure, Raymond A.; Buhlmann, Kurt A.; Iverson, John B.; Mittermeier, Russell A. Conservation Biology of Freshwater Turtles and Tortoises. Chelonian Research Monographs, Number 5. p. 000.197. OCLC472656069. doi:10.3854/crm.5.000.checklist.v4.2011.
Edwards, Danielle; Benavides, Edgar; Garrick, Ryan (January 2013). "The genetic legacy of Lonesome George survives: Giant tortoises with Pinta Island ancestry identified in Galápagos". Biological Conservation157: 225–228. doi:10.1016/j.biocon.2012.10.014.
Russello, M. A.; et al. (2007). "Lineage identification of Galápagos tortoises in captivity worldwide". Animal Conservation10 (3): 304–311. doi:10.1111/j.1469-1795.2007.00113.x.
Proceso de Relaciones Públicas de la Dirección del Parque Nacional Galápagos (24 June 2012). "El mundo pierde al solitario George". Arquivado dende o orixinal o 28 de xuño de 2012. Consultado o 2012-06-25.
Proceso de Relaciones Públicas de la Dirección del Parque Nacional Galápagos (24 June 2012). "El mundo pierde al solitario George". Arquivado dende o orixinal o 28 de xuño de 2012. Consultado o 2012-06-25.
van Dijk, Peter Paul; Iverson, John B.; Shaffer, H. Bradley; Bour, Roger; Rhodin, Anders G. J. (2011). "Turtles of the World, 2011 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status". En Rhodin, Anders G.J.; Pritchard, Peter C. H.; van Dijk, Peter Paul; Saumure, Raymond A.; Buhlmann, Kurt A.; Iverson, John B.; Mittermeier, Russell A. Conservation Biology of Freshwater Turtles and Tortoises. Chelonian Research Monographs, Number 5. p. 000.197. OCLC472656069. doi:10.3854/crm.5.000.checklist.v4.2011.