Hikmah, Nurul, et al. “Collaboration of Stakeholders in the Development of Ecotourism of Tangkahen Village in Pulang Pisau Regency of Central Borneo”. Management and Entrepreneurship: Trends of Development, vol. 2, no. 16, June 2021, pp. 31-41, https://doi.org/10.26661/2522-1566/2021-1/16-03.