Chokchaichamnankit, P., Chulalaksananukul, W., Phengklai, C. and Anamthawat-Jonsson, K. 2014. Karyotypes of some species of Castanopsis, Lithocarpus and Quercus (Fagaceae) from Khun Mae Kuang Forest in Chiang Mai province, northern Thailand. Thai Forest Bulletin (Botany). 35 (Dec. 2014), 38–44.