N. H. G.  Jacobsen, ?A Herpetological Survey of the Transvaal?, University of Natal, Durban, 1989.

A.  Channing, Amphibians of Central and Southern Africa. Ithaca, N.Y.: Comstock Pub. Associates, 2001, p. x, 470 p., [24] p. of plates.

A.  Channing, Amphibians of Central and Southern Africa. Ithaca, NY: Cornell University Press, 2001.

A.  Channing, Amphibians of Central and Southern Africa. Comstock Pub. Associates, 2001.