Masang, Bantern. “An Evaluation of Incremental Income of Farmers Participated in Paddy Pledging Program Crop Year 1991/92”. Kasetsart Journal of Social Sciences 15, no. 2 (July 1, 1994): 119–128. accessed September 10, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/243740.