Midega, C.A.O.; Khan, Z.R.; Van den Berg, J.; Ogol, C.K.P.O.; Dippenaar-Schoeman, Anna S. (Anna Sophia), 1948-; Pickett, J.A.; Wadhams, L.J.(Blackwell, 2008)
Robertson, Mark P.; Harris, K.R. (Kyle Robert); Coetzee, Julie A.; Foxcroft, Llewellyn C.; Dippenaar-Schoeman, Anna S. (Anna Sophia), 1948-; Janse Van Rensburg, Berndt(Zoological Society of Southern Africa, 2011-10)