Panyapol Ingkavaranuwat. 2007. Marketing factors contibuting to consumer behavior in car-tyre purchasing in the Wongwien 22 Karakadakom area (Maitreejit road). Bangkok:Thammasat University;
Panyapol Ingkavaranuwat. (2007) Marketing factors contibuting to consumer behavior in car-tyre purchasing in the Wongwien 22 Karakadakom area (Maitreejit road) (รายงานผลงานวิจัย). Thammasat University:Bangkok.
Panyapol Ingkavaranuwat. Marketing factors contibuting to consumer behavior in car-tyre purchasing in the Wongwien 22 Karakadakom area (Maitreejit road). Bangkok:Thammasat University, 2007.
Panyapol Ingkavaranuwat. (2007) Marketing factors contibuting to consumer behavior in car-tyre purchasing in the Wongwien 22 Karakadakom area (Maitreejit road) (รายงานผลงานวิจัย). Thammasat University:Bangkok.