Khonkayan, S., Jonsonchai, S., & Namang, S. (2019). Comparative Leaf Epidermal Anatomy of Tribe Ruellieae (Acanthaceae) in Northeastern Thailand. Science Essence Journal, 35(2), 61–76. Retrieved from https://ejournals.swu.ac.th/index.php/sej/article/view/11154