Rain, F. F., A. F. M. Aslam, H. S. Ringki, N. Sultana, N. Akter, and A. J. Howlader. “Coccinellid Predators of Aphid and Their Phylogenetic Analysis Using COI Gene Sequences”. International Journal of Applied Sciences and Biotechnology, vol. 4, no. 3, Sept. 2016, pp. 408-16, doi:10.3126/ijasbt.v4i3.15782.