Maqsood Shah, Fazal e Amin, Jawad Sarwar, Amjad Usman, Mian Imad Ali,. " 8. Comparative efficacy of indigenous plant extracts and a synthetic insecticide for the management of tomato fruit worm (Helicoverpa armigera Hub.) and their effect on natural enemies in tomato crop" Pure and Applied Biology (PAB) [Online], Volume 7 Number 3 (31 August 2018)