van der Walt, B. J. “Die Wetsidee As Sleutel Tot Die Filosofie Van Die Katolieke ‘doctor communis’”. Tydskrif Vir Christelike Wetenskap | Journal for Christian Scholarship, vol. 48, no. 3-4, Dec. 2012, pp. 65-85, https://pubs.ufs.ac.za/index.php/tcw/article/view/289.