Turnip, C. “Pola Utilization of Nature Tourism Locations for Socio-Economic Life of Tigaras Village Community, Dolok Pardamean District, Simalungun Regency”. The International Journal of Politics and Sociology Research, vol. 10, no. 1, June 2022, pp. 33-44, doi:10.35335/ijopsor.v10i1.49.