N. I.  Passmore and Carruthers, V. C., South African Frogs: A Complete Guide. Cape Town, South Africa: Southern Book Publishers and Witwatersrand University Press, 1995.

N. I.  Passmore and Carruthers, V. C., South African Frogs: A Complete Guide, 2ndnd ed. Johannesburg: Southern Book Publishers and University of the Witwatersrand Press, 1995.

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.