Bibliography

Boycott, R. C. 2004. Heleophryne purcelli Sclater, 1898. Minter, L. R., M. Burger, J. A. Harrison, H. H. Braack, P. J. Bishop, and D. Kloepfer eds., Atlas and Red Data Book of the Frogs of South Africa, Lesotho and Swaziland: 104–105. Washington, D.C., Smithsonian Institution—Man and Biosphere Biodiversity Program.