Nunsung, S., K. Wanthongchai, and S. Maelim. “Growth of Tree Species As Enrichment Planting at Khuan Khreng Swamp Forest, Nakhon Si Thammarat Province”. Thai Journal of Forestry, vol. 39, no. 1, June 2020, pp. 71-85, https://li01.tci-thaijo.org/index.php/tjf/article/view/245964.