Khaleel, Asim Ahmed. “The Effect Of PQ4R Strategy On The Achievement Of First – Year – Intermediate Stage Students Achievement In Mathematics And Developing Their Science Process Skills”. Journal of Tikrit University for Humanities 26, no. 11 (December 8, 2019): 485–510. Accessed September 10, 2026. https://jtuh.org/index.php/jtuh/article/view/907.