(2009). . University Textbooks; Research and Writting, 14(21), 65-76.
. "". University Textbooks; Research and Writting, 14, 21, 2009, 65-76.
(2009). '', University Textbooks; Research and Writting, 14(21), pp. 65-76.
. University Textbooks; Research and Writting, 2009; 14(21): 65-76.