Thasanpat Panprom และ Wee Rawang. (2015) A strategy of environmental education for participatory management in Tham Phet-Tham Thong forest park, Nakhon Sawan province. Mahidol University:ม.ป.ท.Thasanpat Panprom และ Wee Rawang. 2015. A strategy of environmental education for participatory management in Tham Phet-Tham Thong forest park, Nakhon Sawan province. ม.ป.ท.:Mahidol University;Thasanpat Panprom และ Wee Rawang. A strategy of environmental education for participatory management in Tham Phet-Tham Thong forest park, Nakhon Sawan province. ม.ป.ท.:Mahidol University, 2015. Print.