Pairoj Duangnakorn. 2003. An investigation into the achievement of the industrial education students of Thailand in taxonomic categories in relation to instructional design, achievement motivation and personality types. Department of Education, Panjab University;

Pairoj Duangnakorn. An investigation into the achievement of the industrial education students of Thailand in taxonomic categories in relation to instructional design, achievement motivation and personality types. . Chandigarh:Panjab University, 2003.

Pairoj Duangnakorn. (2003) An investigation into the achievement of the industrial education students of Thailand in taxonomic categories in relation to instructional design, achievement motivation and personality types . Panjab University/Chandigarh.