Retnowati, R., & Poerwadi, B. (2008). The Effort to Improve The Economic Value Of Patchouli Oil: The Controlled Esterification at Production of The Aroma Compounds Base on Patchouli Oil. Jurnal Teknik Industri, 8(1), 67–70. https://doi.org/10.22219/JTIUMM.Vol8.No1.67-70