BOTHA, Johan. Diversity in unity – Voices from the past, the focus on Belhar and the on-going quest for unity. NGTT | Nederduitse Gereformeerde Teologiese Tydskrif, [S. l.], v. 54, n. Supp 2, p. 50–60, 2013. DOI: 10.5952/54-0-342. Disponível em: https://ojs.reformedjournals.co.za/index.php/ngtt/article/view/621. Acesso em: 18 oct. 2025.