Rueangsawang, K., M. Poopath, and P. Chantaranothai. “A New Record of Ehretia (Ehretiaceae, Boraginales) for Thailand”. Thai Forest Bulletin (Botany), vol. 47, no. 1, Mar. 2019, pp. 34-37, doi:10.20531/tfb.2019.47.1.07.