MTSHAWU, Babalwa. 50 must-see geological sites in South Africa. Scientia Militaria - South African Journal of Military Studies, [S. l.], v. 46, n. 1, p. 189–191, 2018. DOI: 10.5787/46-1-1232. Disponível em: https://www.journals.ac.za/index.php/pub/article/view/1232. Acesso em: 11 jun. 2026.