1. Indian Ocean giant tortoises: their systematics and island adaptations;EN Arnold;Phil. Trans. R. Soc. Lond. B,1979
2. Western Indian Ocean Tortoises: biodiversity, palaeontology, evolution and conservation;AS Cheke,2014
3. Birds of Africa, vol. VIII: the Malagasy region;R Safford,2013
4. Aldabra Atoll: a stunning success story in nature conservation;DR Stoddart;Nat. Resour,1983
5. Terrestrial and Freshwater Mollusca of the Seychelles;J Gerlach,2006