boonyanuphong, Phattanan, and Nattinan Chuaysakul. “Factors Determining Farmer’s Decision on Area Expansion of Oil Palm Plantation in Pak Phanang Basin Area, Nakhon Si Thammarat Province”. Journal of KMITL Business school 9, no. 2 (November 11, 2019): 81–100. Accessed May 5, 2024. https://so02.tci-thaijo.org/index.php/fam/article/view/223408.