. (2011). . University Textbooks; Research and Writting, 15(24), 46-66.
. "", University Textbooks; Research and Writting, 15, 24, 2011, 46-66.
. (2011). '', University Textbooks; Research and Writting, 15(24), pp. 46-66.
, "," University Textbooks; Research and Writting, 15 24 (2011): 46-66,
. . University Textbooks; Research and Writting. 2011;15(24):46-66 (In Persian).
