Widjaya, D., Hariyati, Y. and Soejono, D. 2017. Technical and Economic Efficiency of Smallholder Arabica Coffee Farming in Panti Sub-district, Jember. Pelita Perkebunan (a Coffee and Cocoa Research Journal). 33, 1 (Apr. 2017), 51-56. DOI:https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v33i1.255.