Abror, M. Daimul, and Imam Fachruddin. “Inter-Regional Cooperation Model for Managing the Tumpak Sewu Waterfall Tourist Attraction in Sidomulyo Village, Lumajang Regency”. Society, vol. 13, no. 2, Apr. 2025, pp. 600-15, https://doi.org/10.33019/society.v13i2.829.