van Blerk, H, and J S Kellerman. “Die Onoorskatbare Belangrikheid Van Die Inleidingskonsep in Die Ganse Lewe, Met Besondere Verwysing Na Die Preekinleiding”. Acta Theologica 16, no. 2 (December 31, 1996): 41–68. Accessed April 13, 2025. https://journals.ufs.ac.za/index.php/at/article/view/6152.