VAN DER WALT, J. L.; WOLHUTER, C. C.; POTGIETER, F. J. The purpose of educating the human spirit. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship, [S. l.], v. 51, n. 1, p. 1–20, 2015. Disponível em: https://pubs.ufs.ac.za/index.php/tcw/article/view/362. Acesso em: 19 sep. 2025.