Yongyudha Supon. 2002. Local people's participation in the conservation of environment at Budha Udhayan water reservoir Amnatcharoen provinceYongyudha Supon. Field of Study Environment, Mahidol University;

Yongyudha Supon. Local people's participation in the conservation of environment at Budha Udhayan water reservoir Amnatcharoen provinceYongyudha Supon. . Bangkok:Mahidol University, 2002.

Yongyudha Supon. (2002) Local people's participation in the conservation of environment at Budha Udhayan water reservoir Amnatcharoen provinceYongyudha Supon . Mahidol University/Bangkok.