إدريس محمد علي ه. 2007. Use of Bacillus thuringensis (Berliner) and Insect Growth Regulator Nomolt to Control Schizaphis graminum (Rondani). College of Basic Education Research Journal. 5, 3 (Aug. 2007), 99–108. DOI:https://doi.org/10.33899/berj.2007.Vol5.Iss3.39218.