<ref name="Botes_et_al_2006">{{cite journal |first1=A. |last1=Botes |first2=M. A. |last2=McGeoch |first3=H. G. |last3=Robertson |first4=A. |last4=van Niekerk |first5=H. P. |last5=Davids |first6=S. L. |last6=Chown |year=2006 |title=Ants, altitude and change in the northern Cape Floristic Region |url=https://antcat.org/documents/4268/Botes_et_al_2006_J_Biogeogr_incl_Appendices.pdf |journal=Journal of Biogeography |publisher= |volume=33 |issue= |pages=71–90 |doi= }}</ref>