Dunkhuntho, B., B. Chitsomboon, K. Thummanu, and P. Sittisart. “Application of FTIR Microspectroscopy to Monitor Biochemical Changes in Apoptotic Jurkat Cell Death Induced by Extract of Pseuderanthemum palatiferum Leaves”. Science and Engineering Connect, vol. 43, no. 4, Dec. 2020, pp. 425-40, https://ph04.tci-thaijo.org/index.php/SEC/article/view/10675.