ZUL AMRY. Intervention Model of Sinabung Eruption to Occupancy of the Hotel in Brastagi, Indonesia. Researchers World - International Refereed Social Sciences Journal, [S. l.], v. 9, n. 2, p. 68–73, 2021. Disponível em: https://researchersworld.com/index.php/rworld/article/view/92. Acesso em: 11 aug. 2025.