VAN ZYL, J. S. Die Suider-Afrikaanse Doeane-Unie (SADU). Southern Journal for Contemporary History, [S. l.], v. 28, n. 1, p. 48–61, 2003. DOI: 10.38140/sjch.v28i1.348. Disponível em: https://journals.ufs.ac.za/index.php/jch/article/view/348. Acesso em: 4 may. 2024.