Kantachot, C., P. Chantaranothai, and D. A. Simpson. “Leaf Epidermis of Some Ploygonum Species (Polygonaceae in Thailand)”. Asia-Pacific Journal of Science and Technology, vol. 12, no. 3, Apr. 2017, pp. 221-8, https://so01.tci-thaijo.org/index.php/APST/article/view/83638.