van Coller, H., J. Klem, and F. Siebert. “Drought Tolerant Forb Flora of a Semi-Arid Protected Savanna in the Lowveld of South Africa”. Bothalia, African Biodiversity & Conservation 51, no. 1 (February 24, 2021). Accessed April 20, 2021. http://abcjournal.org/index.php/BothaliaABC/article/view/323.