Bajracharya, Sushila, et al. “Feeding Efficiency of Coccinella Septempunctata Linnaeus and Propylea Luteopustulata (Mulsant) Against Mustard Aphid Lipaphis Erysimi (Kaltenbach)”. Nepalese Journal of Zoology, vol. 7, no. 1, July 2023, pp. 1-6, doi:10.3126/njz.v7i1.56304.