BioStor
 | Description of a new species of Emys lately living the gardens of the Zoological Society J E Gray (1860) Ann. Mag. Nat. Hist 6: 148-149 |
 | Proceedings of Learned Societies (1860) Annals And Magazine of Natural History 6: 127-150 |
 | Description of a new species of Geoclemmys from Ecuador J E Gray (1860) Proceedings of the Zoological Society of London 1860: 231-232 |
 | April 24th, 1860 Gray (1860) Proceedings of The Zoological Society of London 1860: 205-243 |
 | On a new species of water-tortoise (Geoclemmys melanosterna) from Darien J E Gray (1861) Proceedings of the Zoological Society of London 1861: 204-205 |
 | Proceedings of Learned Societies (1861) Annals And Magazine of Natural History 8: 334-341 |
 | May 26, 1863 J E Gray (1863) Proceedings of The Zoological Society of London 1863: 181-224 |
 | Notes on the families and genera of tortoises (Testudinata), and on the characters afforded by the study of their skulls J E Gray (1869) Proceedings of the Zoological Society of London 1869: 165-225 |
 | November 1, 1870 Newton (1870) Proceedings of The Zoological Society of London 1870: 663-747 |
 | V.—On my so-called Globiocephalus Grayi Hermann Burmeister (1872) Annals And Magazine of Natural History 10: 51-54 |
 | VI.—On Emys nigra from Upper California J E Gray (1872) Annals And Magazine of Natural History 10: 54-55 |
 | Observations on chelonians, with descriptions of new genera and species J E Gray (1873) Ann. Mag. nat. Hist 11: 289-308 |
 | An annotated checklist and key to the snakes of Mexico H M Smith and E H Taylor (1945) US Natl. Mus. Bull. 187: 1-239 |
 | Revision of the African tortoises and turtles of the suborder Cryptodira, by Arthur Loveridge and Ernest E. Williams A Loveridge (1957) Bulletin of The Museum of Comparative Zoology 115: 161-557 |
 | Revision of the African Tortoises and Turtles of the Suborder Cryptodira Arthur Loveridge and Ernest E Williams (1957) Bulletin of the Museum of Comparative Zoology 115: 163-557 |