Pooma, R. “Yang Na Trees (Dipterocarpus Alatus Roxb. Ex G. Don), Dipterocarpaceae Along Chiang Mai-Lamphun Road An Analysis of Their Present Status and Conservation Needs”. Thai Forest Bulletin (Botany), no. 24, Dec. 2014, pp. 1-34, https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/25044.