SIMANJORANG, L. P.; BANUWA, I. S.; SAFE’I, R.; SETIAWAN, A. Economic Valuation of Sipiso-piso Waterfall with Travel Cost Method and Willingness to Pay. Jurnal Silva Tropika, [S. l.], v. 2, n. 2, p. 52-58, 2018. DOI: 10.22437/jsilvtrop.v2i3.5423. Disponível em: https://online-journal.unja.ac.id/STP/article/view/5423. Acesso em: 19 nov. 2024.