Mararakanye, Ndifelani, Modau N. Magoro, Nomakhazi N. Matshaya, Matome C. Rabothata, and Sthembele R. Ncobeni. 2017. “Railway Side Mapping of Alien Plant Distributions in Mpumalanga, South Africa”. African Biodiversity & Conservation 47 (1). https://www.abcjournal.org/index.php/abc/article/view/231.