Pitipunya, Rangsan. “Determinants of Crop Diversification on Paddy field : A Case Study of Diversification to Vegetables”. Kasetsart Journal of Social Sciences 16, no. 2 (July 1, 1995): 201–208. accessed September 10, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/243725.