Supatcha Ngonrath Na Ayudhya. 2007. Attitude forestry faculty's fourth year students toward ecotourism. Field of Study Development Communication, Kasetsart University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2007.335

Supatcha Ngonrath Na Ayudhya. Attitude forestry faculty's fourth year students toward ecotourism. . Bangkok:Kasetsart University, 2007. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2007.335

Supatcha Ngonrath Na Ayudhya. (2007) Attitude forestry faculty's fourth year students toward ecotourism . Kasetsart University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2007.335