Poopath, M., D. Sookchaloem, S. Duangjai, and R. Pooma. “Hopea Macrocarpa (Dipterocarpaceae), a New Species from Peninsular Thailand”. Thai Forest Bulletin (Botany), vol. 45, no. 2, Oct. 2017, pp. 94-98, doi:10.20531/tfb.2017.45.2.02.