Leeprakhon, A., Chinnawong, D., Chekdaengphanao, P., naksen, K., Takainsok, C., Kaewbubpa, D., Sukwong, P. and Tiabkum, C. 2026. Investigation of Macroscopic Characteristics, Preliminary Phytochemical Screening, and Optimized Extraction Conditions of Justicia Gendarussa L. and Justicia Gendarussa Burm.f . Koch Cha Sarn Journal of Science. 48, 1 (Jun. 2026), 10–21.