Chanika Techapairat. 2007. Why do Bangkokians visit fitness centers a study of two fitness centers in Bangkok. Bangkok:Thammasat University;
Chanika Techapairat. (2007) Why do Bangkokians visit fitness centers a study of two fitness centers in Bangkok (รายงานผลงานวิจัย). Thammasat University:Bangkok.
Chanika Techapairat. Why do Bangkokians visit fitness centers a study of two fitness centers in Bangkok. Bangkok:Thammasat University, 2007.
Chanika Techapairat. (2007) Why do Bangkokians visit fitness centers a study of two fitness centers in Bangkok (รายงานผลงานวิจัย). Thammasat University:Bangkok.