VERSTER, P. Die Etiek van die Christelike Sending. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship, [S. l.], v. 45, n. 1 - 2, p. 231–250, 2009. Disponível em: https://pubs.ufs.ac.za/index.php/tcw/article/view/172. Acesso em: 18 sep. 2025.