Nuananong Prathumnet, Songkoon Chantachon, Kosit Paengsoi, Niwat Thongwol and Budsakorn Saenyabud
Journal of Social Sciences 6 ( 3 ): 330 - 332 , 2010
Decha Buates, Songkoon Chantachon, Kosit Paengsoi and Anongrit Kangrang
Journal of Social Sciences 6 ( 3 ): 478 - 482 , 2010