Sukwong, Somsak, Wasan Kaitpraneet, Boonvong Thaiutsa, and Choob Khemnark. “Predicting Height Growth of Plantation Teak from Soil and Topograpic Factors”. Agriculture and Natural Resources 8, no. 2 (July 1, 1974): 63–71. accessed September 18, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/240690.