Sirimongkol, S., Parnell, J., Hodkinson, T., Middleton, D. and Puglisi, C. 2019. Five new species of Henckelia (Gesneriaceae) from Myanmar and Thailand. Thai Forest Bulletin (Botany). 47, 1 (Apr. 2019), 38–54. DOI:https://doi.org/10.20531/tfb.2019.47.1.08.