Wirman, E. P. (2016). Naẓariyāt fī Takāmul al-‘Ulūm: Dirāsah Naqdīyah wa Ta’sīsīyah fī Thaqāfat al-Minangkabau. Studia Islamika, 23(1), 105–142. https://doi.org/10.15408/sdi.v23i1.2105