du Plessis, Liezel, Peet van der Merwe, and Melville Saayman. “Tourists’ Perceptions on Whether South African National Parks Are Environmentally Friendly”. Acta Academica: Critical views on society, culture and politics 45, no. 1 (January 31, 2013): 187–208. Accessed March 14, 2025. https://journals.ufs.ac.za/index.php/aa/article/view/1394.