Th. Al-kashab, H. 2018. Adoption of the Competing Values Approach to Achieve Organizational Effectiveness: A Prospective Study to Administrative Leadership Opinions At The Mosul University. TANMIYAT AL-RAFIDAIN. 37, 117 (Mar. 2018), 119–136. DOI:https://doi.org/10.33899/tanra.2018.143125.