Manurung, Darwin Herlis, et al. “Struktur Cosmos Masyarakat Batak Dalam Simbol Ulos”. Anthropos: Jurnal Antropologi Sosial Dan Budaya (Journal of Social and Cultural Anthropology), vol. 6, no. 1, June 2020, pp. 31-40, doi:10.24114/antro.v6i1.16603.