Crouch, N., Ndlovu, E., Mullholland, D.A. and Pohl, T.L. 2003. The genus Clivia in ethnomedicine: usage, bioactivity and phytochemistry. Clivia Yearbook 5.

Cunningham, A.B. 1988. An investigation of the herbal medicine trade in Natal/KwaZulu. Investigational Report No. 29. Institute of Natural Resources, Pietermaritzburg.

Dlamini, T.S. and Dlamini, G.M. 2002. Swaziland. In: J.S. Golding (ed), Southern African plant red data lists (pp. 121-134), Southern African Botanical Diversity Network Report 14.

Duncan, G., Jeppe, B. and Voigt, L. 2016. The Amaryllidaceae of southern Africa. Umdaus Press, Pretoria.

Dyer, R.A. 1943. Clivia caulescens. Flowering Plants of Africa 23:t. 891.

Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.

Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.

Mander, M. 1997. Medicinal plant marketing in Bushbuckridge and Mpumalanga: a market survey and recommended strategies for sustaining the supply plants in the region. Danish Cooperation for Environment and Development, Danish Environmental Protection Agency, Strandgade.

Mander, M. 1998. Marketing of indigenous medicinal plants in South Africa: a case study in KwaZulu-Natal. Food and Agriculture Organization of the United Nations, Rome.

Murray, E.G., Ran, Y., De Lange, P.J., Hammet, K.R.W., Truter, J.T. and Swanevelder, Z.H. 2004. A new species of Clivia (Amyaryllidaeceae) endemic to the Pondoland Centre of Endemism, South Africa. Botanical Journal of the Linnean Society 146:369-374.

Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.

Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.

Vorster, P.J. 1994. Clivia nobilis. Flowering Plants of Africa 53:70-74.

Williams, V.L. 2003. Hawkers of health: an investigation of the Faraday Street traditional medicine market in Johannesburg. Report to Gauteng Directorate for Nature Conservation, DACEL.

Williams, V.L. 2007. The design of a risk assessment model to determine the impact of the herbal medicine trade on the Witwatersrand on resources of indigenous plant species. Unpublished PhD Thesis, University of the Witwatersrand, Johannesburg.

Williams, V.L., Balkwill, K. and Witkowski, E.T.F. 2000. Unravelling the commercial market for medicinal plants and plant parts on the Witwatersrand, South Africa. Economic Botany 54(3):310-327.