Hoamuangkaew, Wuthipol, and Santi Suksard. “Financial Analysis of Alstonia scholaris (L) R.Br. Refoestation”. Kasetsart Journal of Social Sciences 26, no. 2 (December 31, 2005): 263–270. accessed September 11, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/246277.