Panyatanakun, R., Teeravuttichai, U., Siriphanich, S. and Aungsuratana, A.- on (2001) “Basic Data for Landscape Planning, Hin-Perng Rafting Area, Sai Yai River, Khao-Yai National Reserved Forests”, Kasetsart Journal of Social Sciences, 22(2), pp. 165–178. available at: https://so04.tci-thaijo.org/index.php/kjss/article/view/243494 (accessed: 13 September 2026).