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)
Foord, Stefan Hendrik; Mafadza, M.M.; Dippenaar-Schoeman, Anna S. (Anna Sophia), 1948-; Janse Van Rensburg, Berndt(Zoological Society of Southern Africa, 2008-10)