1. Al-Eryani A. R. Zandri E. (2006): Case Study 4. Coral Mining. In: C. Cheung & L. DeVantier (2006), Socotra – A Natural History of the Islands and their People. K. Van Damme (Ed.). p. 355. Odyssey Books and Guides, Airphoto International Ltd., Hong Kong
2. Al-Safadi M. M. (1998): Freshwater fishes of Soqotra Island, Yemen. In: H. J. Dumont. (Ed.), Soqotra: Proceedings of the First International Symposium on Soqotra Island: Present & Future, p. 213–217. – United Nations Publications, New York
3. Bahn P. Flenley J. R. (1992): Easter Island, Earth Island. – Thames and Hudson, London. 240 pp
4. Banfield L. Van Damme K. Miller A. (in press): Evolution and biogeography of the flora of the Socotra Archipelago (Yemen). In: D. Bramwell (Ed.), The evolution of island floras. – Cambridge University Press
5. Baum T. (1997): The fascination of islands: A tourism perspective. In: D. G. Lockhart & D. Drakakis-Smith (Eds), Island tourism: trends and prospects. – London and New York: Pinter, p. 21–35