1. Craib, W. G. (1912). Contributions to the Flora of Siam. Additamenta 2. Bull. Misc. Inform., Kew 1912: 264 – 269.
2. Bachman, S., Moat, J., Hill, A. W., de Torre, J. & Scott, B. (2011). Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. ZooKeys 150: 117 – 126.
3. Forest Herbarium (2014). Thai Plant Names. Tem Smitinand. Revised Edition. The Forest Herbarium, Royal Forest Department, Bangkok.
4. Graham, V. A. W. (1988). Delimitation and infra-generic classification of Justicia (Acanthaceae). Kew Bull. 43: 551 – 624.
5. Hansen, B. (1985). Studies on the Acanthaceae of Thailand. Fl. Males. Bull. 9: 173 – 178.