DE LANGE, L. O. K. The Engaged University. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship, [S. l.], v. 39, n. 3 - 4, p. 191–208, 2003. Disponível em: https://pubs.ufs.ac.za/index.php/tcw/article/view/22. Acesso em: 5 oct. 2025.