Mala, M., Islam, M. M. U., & Islam, K. S. (2012). Residual effect of two insecticides and neem oil against epilachna beetle, Epilachna vigintioctopunctata (Fab.) on bitter gourd. Journal of the Bangladesh Agricultural University, 10(1), 21–25. https://doi.org/10.3329/jbau.v10i1.12034