So’ad, A. P. D. S. Z., and N. A. Mokthar. “A Phytochemical Screening and FTIR Analysis for Fractions of Ethanol Extract from Mitragyna Speciosa Leaves”. Journal of Pharmacy, vol. 6, no. 2, July 2026, pp. 292-03, doi:10.31436/jop.v6i2.527.