Sinaga T, Siahaan M, Sinaga D. The Potential Of Promise Waterfall as A Tourist Attraction in The Context of Tourism Development In Baktiraja, Humbang Hasundutan Regency. IJMEBE [Internet]. 2026 May 31 [cited 2026 Jun. 7];4(3):258-75. Available from: https://putrapublisher.org/index.php/jamis/article/view/1615