คงวาริน ก., and J. ROOSAE. “Consumer’s Behavior in Pesticide - Free Vegetable and Produce Consumption in Suratthani Province”. Journal of Management Sciences Suratthani Rajabhat University, vol. 7, no. 1, June 2020, pp. 50-77, https://so03.tci-thaijo.org/index.php/msj/article/view/127919.