Chaiyakarn Zheng, Jiaranai, and Kamonphon Nakornchaigul. 2020. “Factors Influencing Consumer Intention to Purchase Organic Food in Ubon Ratchathani Province, Thailand”. Dusit Thani College Journal 14 (1):241-53. https://so01.tci-thaijo.org/index.php/journaldtc/article/view/241407.