Pairat Thidpad. 2002. The development of a self-evaluation model for secondary school environmental education. Field of Study Environmental Education, Mahidol University;
Pairat Thidpad. (2002) The development of a self-evaluation model for secondary school environmental education . Mahidol University/Bangkok.
Pairat Thidpad. The development of a self-evaluation model for secondary school environmental education. . Bangkok:Mahidol University, 2002.
Pairat Thidpad. (2002) The development of a self-evaluation model for secondary school environmental education . Mahidol University/Bangkok.