Chai-udom, K., and S. Suwannatong. “Application of Geographic Information System for Magnolia sirindhorniae Noot.& Chalermglin Forest Database Lopburi province”. Journal of Science and Technology CRRU, vol. 2, no. 1, June 2023, pp. 22-33, https://li01.tci-thaijo.org/index.php/jstcrru/article/view/257843.