Choong Kwai Fatt, Edward Wong Sek Khin and Tioh Ngee Heng
American Journal of Economics and Business Administration 2 ( 1 ): 56 - 63 , 2010
Choong Kwai Fatt and Edward Wong Sek Khin
Journal of Social Sciences 6 ( 2 ): 256 - 264 , 2010