Khemtong, P., P. Tipanark, and Y. Chitramitra. “The Construction of a Slide-tape Presentation on Measurement and Evaluation in Teaching for Competency Development of Agriculture Teachers in Secondary Schools”. Kasetsart Journal of Social Sciences, vol. 12, no. 2, July 1991, pp. 106-11, https://so04.tci-thaijo.org/index.php/kjss/article/view/243999.