Siti Fatimah Soenaryo, Suprianto and Yuni Pantiwati
The Social Sciences 11 ( 19 ): 4782 - 4789 , 2016
Yuni Pantiwati, Sukasih and Siti Fatimah Soenarjo
The Social Sciences 11 ( 22 ): 5501 - 5508 , 2016