Safira, L. R., A. Widyasanti, and S. Nurjanah. “Effects of Solvent Volume Ratio on Patchouli-Alcohol Crystallization in Patchouli Oil (Pogostemon Cablin Benth) With Cooling Crystallization Method”. Jurnal Ilmiah Rekayasa Pertanian Dan Biosistem, vol. 7, no. 2, Sept. 2019, pp. 239-48, doi:10.29303/jrpb.v7i2.142.