International Commission on Zoological Nomenclature (1999). Ride, W. D. L.; Cogger, H.G.; Dupuis, C.; Kraus, O.; Minelli, A.; Thompson, F. C.; Tubbs, P. K. (eds.). International Code of Zoological Nomenclature (4th ed.). The International Trust for Zoological Nomenclature. ISBN0-85301-006-4. Archived from the original on 2009-05-24. Retrieved 2008-07-13.
International Commission on Zoological Nomenclature (1999). Ride, W. D. L.; Cogger, H.G.; Dupuis, C.; Kraus, O.; Minelli, A.; Thompson, F. C.; Tubbs, P. K. (eds.). International Code of Zoological Nomenclature (4th ed.). The International Trust for Zoological Nomenclature. ISBN0-85301-006-4. Archived from the original on 2009-05-24. Retrieved 2008-07-13.