Phitsanu Sittitoon. 2003. Self-esteem toward the job of motor cycle patrol police officer provincial police of Ratchaburi. Field of Study Criminology and Criminal Justice, Mahidol University;

Phitsanu Sittitoon. Self-esteem toward the job of motor cycle patrol police officer provincial police of Ratchaburi. . Bangkok:Mahidol University, 2003.

Phitsanu Sittitoon. (2003) Self-esteem toward the job of motor cycle patrol police officer provincial police of Ratchaburi . Mahidol University/Bangkok.