Batubara, F. Y.; Frinaldi, A. .; Lanin, D. .; Rembrandt, R.; Umar, G. .; Syah, N. . The Systematic Literature Review: Public Policy Implementation in Achieving Ecotourism Sustainability at Harau Valley Waterfall, West Sumatra. TOFEDU 2025, 4, 5681-5692.