Roosfa Hashim
Research Journal of Applied Sciences 7 ( 3 ): 146 - 150 , 2012
The Social Sciences 7 ( 4 ): 553 - 556 , 2012
The Social Sciences 7 ( 4 ): 557 - 559 , 2012
Roosfa Hashim and Hasnan Kasan
The Social Sciences 7 ( 5 ): 689 - 695 , 2012