Rueangsawang, K., D. A. Simpson, and P. Chantaranothai. “Justicia Larsenii and J. Saksuwaniae, Two New Species of Acanthaceae from Peninsular Thailand”. Tropical Natural History, vol. 20, no. 2, July 2020, pp. 116-24, https://li01.tci-thaijo.org/index.php/tnh/article/view/216481.