Template:Puff et al., 2021
- Puff, C. (†), Chayamarit, K., Chamchumroon, V. & Esser, H.-J. 2021. Flora of Thailand, Vol. 15, Part 1. Rubiaceae (Genera 1–45). 235 pp. Bangkok, Thailand: The Forest Herbarium, National Park, Wildlife and Plant Conservation Department. ISBN 9786163166715