Darwish Al-Lahibi, Ahmed Khalil. 2018. “The Effect of Using the Formal Regulator Strategy In the Academic Achievement of the Students of the College of Basic Education - Department of Islamic Education in the Subject of the Fundamentals of Religion”. Journal of Tikrit University for Humanities 25 (5):491-511. https://doi.org/10.25130/jtuh.25.5.2018.15.