Nasral, Tre Julia, et al. “Predation Rate and Functional Response of Camel Groundbeetle (Ophionea Nigrofasciata) on Several Densities of Brown Planthopper (Nilaparvata lugens): Predation Rate and Functional Response of Camel Groundbeetle (Ophionea Nigrofasciata) on Several Densities of Brown Planthopper (Nilaparvata Lugens)”. Jurnal Proteksi Tanaman (Journal of Plant Protection), vol. 4, no. 1, June 2020, pp. 11-20, doi:10.25077/jpt.4.1.11-20.2020.