(2009). . Dastavard, 19(28), 20-27.
. "", Dastavard, 19, 28, 2009, 20-27.
(2009). '', Dastavard, 19(28), pp. 20-27.
, "," Dastavard, 19 28 (2009): 20-27,
. Dastavard, 2009; 19(28): 20-27.
)