Crumly, Charles R (1988). "A Nomenclatural History of Tortoises (Family Testudinidae)". Smithsonian Herpetological Information Service (75): 1–17. doi:10.5479/si.23317515.75.1.
Rhodin, Anders G.J. (15 November 2021). Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs. Vol. 8 (9 ed.). Chelonian Research Foundation and Turtle Conservancy. doi:10.3854/crm.8.checklist.atlas.v9.2021. ISBN978-0-9910368-3-7. S2CID244279960.
Bauer, Thomas; Reese, Sven; Koelle, Petra (3 April 2019). "Nutrition and husbandry conditions of Palearctic tortoises (Testudo spp.) in captivity". Journal of Applied Animal Welfare Science. 22 (2): 159–170. doi:10.1080/10888705.2018.1453814. PMID29609473. S2CID4563883.
Nowakiewicz, Aneta; Ziółkowska, Grażyna; Zięba, Przemysław; Stępniewska, Katarzyna; Tokarzewski, Stanisław (1 April 2012). "Russian tortoises (Agrionemys horsfieldi) as a potential reservoir for Salmonella spp". Research in Veterinary Science. 92 (2): 187–190. doi:10.1016/j.rvsc.2011.03.019. PMID21486674.
Bauer, Thomas; Reese, Sven; Koelle, Petra (3 April 2019). "Nutrition and husbandry conditions of Palearctic tortoises (Testudo spp.) in captivity". Journal of Applied Animal Welfare Science. 22 (2): 159–170. doi:10.1080/10888705.2018.1453814. PMID29609473. S2CID4563883.
Nowakiewicz, Aneta; Ziółkowska, Grażyna; Zięba, Przemysław; Stępniewska, Katarzyna; Tokarzewski, Stanisław (1 April 2012). "Russian tortoises (Agrionemys horsfieldi) as a potential reservoir for Salmonella spp". Research in Veterinary Science. 92 (2): 187–190. doi:10.1016/j.rvsc.2011.03.019. PMID21486674.
Rhodin, Anders G.J. (15 November 2021). Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs. Vol. 8 (9 ed.). Chelonian Research Foundation and Turtle Conservancy. doi:10.3854/crm.8.checklist.atlas.v9.2021. ISBN978-0-9910368-3-7. S2CID244279960.
Bauer, Thomas; Reese, Sven; Koelle, Petra (3 April 2019). "Nutrition and husbandry conditions of Palearctic tortoises (Testudo spp.) in captivity". Journal of Applied Animal Welfare Science. 22 (2): 159–170. doi:10.1080/10888705.2018.1453814. PMID29609473. S2CID4563883.