(1)
Panyatanakun, R.; Teeravuttichai, U.; Siriphanich, S.; Aungsuratana, A.- on. Basic Data for Landscape Planning, Hin-Perng Rafting Area, Sai Yai River, Khao-Yai National Reserved Forests. kasetsart J. Soc. Sci. 2001, 22, 165-178.