Strauss, D. F. M. “Did Darwin Get over the Second Hurdle? (The Problem of Constancy Amidst Change)”. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship 45, no. 4 (December 18, 2009): 1-32. Accessed November 22, 2024. https://pubs.ufs.ac.za/index.php/tcw/article/view/183.