Roslan, H. A., F. C. Yien Yin, S. S. Fong, A. Fong, J. Chong, and A. Husaini. “Effects of Short Term UVB and UVC Irradiation on Hydroxyphenylpyruvate Reductase Expression and Rosmarinic Acid Accumulation in Orthosiphon Aristatus”. Science & Technology Asia, Vol. 26, no. 2, June 2021, pp. 155-68, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/222186.