SUBANTI, Sri et al. Determinant of Willingness to Pay and Economic Value for Tourism Object using Contingent Valuation Method: The Case of Sangiran Sites, Province of Central Java, Indonesia. Journal of Environmental Management and Tourism, [S.l.], v. 8, n. 4, p. 867-874, oct. 2017. ISSN 2068-7729. Available at: <https://journals.aserspublishing.eu/jemt/article/view/1419>. Date accessed: 29 mar. 2024. doi: https://doi.org/10.14505//jemt.v8.4(20).16.