Strauss, D. F. M. “The Best Known But Least Understood Part of Dooyeweerd’s Philosophy”. Tydskrif Vir Christelike Wetenskap | Journal for Christian Scholarship, vol. 42, no. 1 - 2, Jan. 2006, pp. 61-80, https://pubs.ufs.ac.za/index.php/tcw/article/view/64.