B. Kusbandrijo, M. Akmal Vyandri, and R. Dwijayanti, “Policy Formulation Analysis Based on Evidence from the Development of Lapindo Mud as a Dark Tourism Destination in Sidoarjo Regency”, Society (Bangka. Online), vol. 13, no. 1, pp. 88–113, Mar. 2025, doi: 10.33019/society.v13i1.768.