“DIFFERENTIATION OF THE WHITE AND PURPLE FLOWER FORMS OF Orthosiphon Aristatus (Blume) Miq. BY 1D and 2D CORRELATION IR SPECTROSCOPY”. Jurnal Teknologi (Sciences & Engineering) 77, no. 3 (October 28, 2015). Accessed December 20, 2024. https://journals.utm.my/jurnalteknologi/article/view/6010.