Syarief, M., Wahyu Susilo, A., Himawan, T. and Latief Abadi, A. (2017) “Diversity and Abundance of Natural Enemies of Helopeltis antonii in Cocoa Plantation Related with Plant Pattern and Insecticide Application”, Pelita Perkebunan (a Coffee and Cocoa Research Journal), 33(2), pp. 128-136. doi: 10.22302/iccri.jur.pelitaperkebunan.v33i2.266.