Alt, H. (2021) “Platonisme, konseptualisme en nomimalisme in die versamelingsteorie”, Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship, 57(3&4), pp. 31–52. Available at: https://pubs.ufs.ac.za/index.php/tcw/article/view/557 (Accessed: 5 October 2025).