Flemming, A.F.; Costandius, E.; Mouton, P.L.N. (2006). "The effect of intergroup distance on group fidelity in the group-living Lizard, Cordylus cataphractus". African Journal of Herpetology. 55 (1): 61–68. doi:10.1080/21564574.2006.96355 (inactive 1 November 2024).{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)