Zbar, K.
(2019).
 The effect of Strategy (PQ4R) on acquiring Islamic concepts and improving Investigation  Skills among intermediate stage students in Iraq.
<em>Journal Of Tikrit University For Humanities - مجلة جامعة تكريت للعلوم الانسانية, 26</em>(11), 534-511.
doi:10.25130/hum.v26i11.883