1. People's Plants—A Guide to Useful Plants of Southern Africa;van Wyk,2000
2. The Medicinal and Poisonous Plants of Southern and Eastern Africa;Watt,1962
3. Medicinal Plants of South Africa;van Wyk,1997
4. Toxicity of Callilepis laureola;Wainwright;S. Afr. Med. J.,1977
5. Herb use and necrodegenerative hepatitis;Mokhobo;S. Afr. Med. J.,1976