Siebert, Stefan, and Madeleen Struwig. “Borassus Aethiopum Mart. (Arecaceae) in Limpopo Province With a Key to South African Palms”. Bothalia, African Biodiversity & Conservation, vol. 49, no. 1, Feb. 2019, https://abcjournal.org/index.php/BothaliaABC/article/view/29.