Porntanwa Sotthibandhu. 2007. Credit card-usage behaviors of working people : a case study in the Aree area, Bangkok. Bangkok:Thammasat University;
Porntanwa Sotthibandhu. (2007) Credit card-usage behaviors of working people : a case study in the Aree area, Bangkok (รายงานผลงานวิจัย). Thammasat University:Bangkok.
Porntanwa Sotthibandhu. Credit card-usage behaviors of working people : a case study in the Aree area, Bangkok. Bangkok:Thammasat University, 2007.
Porntanwa Sotthibandhu. (2007) Credit card-usage behaviors of working people : a case study in the Aree area, Bangkok (รายงานผลงานวิจัย). Thammasat University:Bangkok.