Umer, M., M. Atif, and M. Ahmad. “Study of Biology of Pink Bollworm (Pectinophora Gossypiella) Lepidoptera: Gelechiidae on Alternate Host (Okra)”. Shanlax International Journal of Arts, Science and Humanities, Vol. 6, no. 3, Jan. 2019, pp. 18-21, http://www.shanlaxjournals.in/journals/index.php/sijash/article/view/215.