Kunsaengkaew, Chukkrid, Sutonya Thongrak, and Sirirat Kiatpathomchai. 2020. “Factors Affecting the Implementation of RSPO Standard Practices of the Smallholders in Surat Thani Province”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences 8 (3):97-112. https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/247816.