Opas Piansoongnern. 2007. Factors that influence Thai investors' loyalty to securities companies in BangkokOpas Piansoongnern. Field of Study Management, Shinawatra University;
Opas Piansoongnern. (2007) Factors that influence Thai investors' loyalty to securities companies in BangkokOpas Piansoongnern . Shinawatra University/Bangkok.
Opas Piansoongnern. Factors that influence Thai investors' loyalty to securities companies in BangkokOpas Piansoongnern. . Bangkok:Shinawatra University, 2007.
Opas Piansoongnern. (2007) Factors that influence Thai investors' loyalty to securities companies in BangkokOpas Piansoongnern . Shinawatra University/Bangkok.