Wulandari, L. ., T. P. . Rahmadania, and N. . Kristiningrum. “IAI SPECIAL EDITION: Infrared Spectroscopy Chemometric Model for Determination of Phenolic Content of Plant Leaf Powder”. Pharmacy Education, vol. 22, no. 2, Mar. 2022, pp. p. 160-164, doi:10.46542/pe.2022.222.160164.