Siregar, Dapot, and Yurulina Gulo. 2020. “Eksistensi Parmalim Mempertahankan Adat Dan Budaya Batak Toba Di Era Modern”. Anthropos: Jurnal Antropologi Sosial Dan Budaya (Journal of Social and Cultural Anthropology) 6 (1):41-51. https://doi.org/10.24114/antro.v6i1.16632.