Pasit Chaisorn. 2007. Information management system through internet network for ecotourism extension of Sai Yok National Park, Kanchanaburi province. Faculty of Environment and Resource Studies, Mahidol University;

Pasit Chaisorn. Information management system through internet network for ecotourism extension of Sai Yok National Park, Kanchanaburi province. . Bangkok:Mahidol University, 2007.

Pasit Chaisorn. (2007) Information management system through internet network for ecotourism extension of Sai Yok National Park, Kanchanaburi province . Mahidol University/Bangkok.