NAPIER, Wilfrid. Spreading the Gospel of Life. Tydskrif vir Christelike Wetenskap | Journal for Christian Scholarship, [S. l.], n. 2, p. 125–140, 2006. Disponível em: https://pubs.ufs.ac.za/index.php/tcw/article/view/110. Acesso em: 28 oct. 2025.