Jongdee To-im. 2009. Development of learning packages to promote knowledge and perceptions on local ecosystems of lower secondary school students. Institute for Innovative Learning, Mahidol University;
Jongdee To-im. (2009) Development of learning packages to promote knowledge and perceptions on local ecosystems of lower secondary school students . Mahidol University/Bangkok.
Jongdee To-im. Development of learning packages to promote knowledge and perceptions on local ecosystems of lower secondary school students. . Bangkok:Mahidol University, 2009.
Jongdee To-im. (2009) Development of learning packages to promote knowledge and perceptions on local ecosystems of lower secondary school students . Mahidol University/Bangkok.