Wipawan Tinnungwattana. 2008. The development of environmental education activities model for school through knowledge management. Faculty of Social Sciences and Humanities, Mahidol University;
Wipawan Tinnungwattana. (2008) The development of environmental education activities model for school through knowledge management . Mahidol University/Bangkok.
Wipawan Tinnungwattana. The development of environmental education activities model for school through knowledge management. . Bangkok:Mahidol University, 2008.
Wipawan Tinnungwattana. (2008) The development of environmental education activities model for school through knowledge management . Mahidol University/Bangkok.