“Chlorogenic Acid Isolation from Coffee As Affected by the Homogeneity of Cherry Maturity”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), vol. 35, no. 2, Aug. 2019, pp. 119-24, https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v35i2.379.