Mustikawati, D. R., Mulyanti, N., & Arief, R. W. (2016). Study Effectiveness of Liquid Smoke as a Natural Insecticide for Main Pest Control of Soybean Crops. International Journal of Sciences: Basic and Applied Research (IJSBAR), 30(1), 237-245. https://gssrr.org/JournalOfBasicAndApplied/article/view/6363