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.