1. Anonymous, c.1994. Table V: Useful plant resources to communities in and around Songimvelo Game Reserve. Unpublished species list.
2. Medicinal and magical plants of southern Africa: an annotated checklist;Arnold,2002
3. Conservation concerns for Bowiea volubilis, an unusually succulent member of the Hyacinthaceae;Bircher;Herbertia,1998
4. An inventory of medicinal plants traded on the western boundary of the Kruger National Park, South Africa;Botha;Koedoe,2001
5. The impact of commercial harvesting on Warburgia salutaris (‘pepper-bark tree’) in Mpumalanga, South Africa;Botha;Biodiversity and Conservation,2004