Pohan, Zulfikar Riza Hariz. “Parmalim and Contemporary Hegemony of the World Religion’s Missionary Agenda in Aceh Singkil”. Wawasan: Jurnal Ilmiah Agama Dan Sosial Budaya, vol. 8, no. 1, Jan. 2024, pp. 69-76, doi:10.15575/jw.v8i1.11928.