Ilyas, S. and Abdul Kadir, F.A. 2021. Dinamika Dakwah al-Jam’iyatul Washliyah di Tanah Batak Toba, Sumatera Utara: The Dynamics of al-Jam’iyatul Washliyah Da’wah in the Toba Batak Land, North Sumatra. Jurnal Usuluddin. 49, 2 (Dec. 2021), 37–67. DOI:https://doi.org/10.22452/usuluddin.vol49no2.2.