Hasibuan, Zainal Efendi. “The Portrait of Surau As a Forerunner of Madrasah: The Dynamics of Islamic Institutions in Minangkabau Toward Modernization”. AJIS: Academic Journal of Islamic Studies, vol. 1, no. 1, Dec. 2016, pp. 1-28, https://journal.iaincurup.ac.id./index.php/AJIS/article/view/90.