“Effect of Picung (Pangium Edule) Plant Extracts As a Botanical Pesticide on Mortality of Coffee Berry Borer (Hypothenemus Hampei)”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), vol. 30, no. 3, Dec. 2014, pp. 220-8, https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v30i3.64.