BOON THONG, L. Ecotourism, Foreign Tourist Perception, and National Parks: The Case in Northeast Langkawi. Malaysian Journal of Science, [S. l.], v. 24, p. 205–212, 2005. Disponível em: https://sare.um.edu.my/index.php/MJS/article/view/8845. Acesso em: 3 jul. 2024.