abas lafta knehr, D. (2009). Factors affecting the performance of students at the University of Wasit. , 1(1), 45-62.

dr abas lafta knehr. "Factors affecting the performance of students at the University of Wasit". , 1, 1, 2009, 45-62.

abas lafta knehr, D. (2009). 'Factors affecting the performance of students at the University of Wasit', , 1(1), pp. 45-62.

abas lafta knehr, D. Factors affecting the performance of students at the University of Wasit. , 2009; 1(1): 45-62.