van der Walt, Bennie J. “The Growing, Worldwide Movement for Christian Higher Education: Some Requirements for Christian Tertiary Education, Especially in Africa”. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship 50, no. 1-2 (May 29, 2014): 173-210. Accessed August 9, 2020. https://pubs.ufs.ac.za/index.php/tcw/article/view/343.