. (2009). . University Textbooks; Research and Writting, 14(21), 112-125.
. "", University Textbooks; Research and Writting, 14, 21, 2009, 112-125.
. (2009). '', University Textbooks; Research and Writting, 14(21), pp. 112-125.
, "," University Textbooks; Research and Writting, 14 21 (2009): 112-125,
. . University Textbooks; Research and Writting. 2009;14(21):112-125 (In Persian).
