Rattanapongpinyo, Taninrat. “The Physical Distribution Strategy of Palm Sugar Products in Phetchaburi Province”. Trends of Humanities and Social Sciences Research 10, no. 2 (August 8, 2022): 292–314. Accessed May 5, 2024. https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/255425.