“Characteristics of Coffee As a Response to Different Environmental Conditions in Lampung: I. Morphological Variations”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), vol. 35, no. 2, Jan. 2020, pp. 103-18, https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v35i2.357.