Pongpichan Chayanonpiriya. 2008. Encouragement and support of the legal rights of the public by commissioned police officers of the Metropolitan Police Subdivision 9. Field of Study Criminology, Mahidol University;
Pongpichan Chayanonpiriya. (2008) Encouragement and support of the legal rights of the public by commissioned police officers of the Metropolitan Police Subdivision 9 . Mahidol University/Bangkok.
Pongpichan Chayanonpiriya. Encouragement and support of the legal rights of the public by commissioned police officers of the Metropolitan Police Subdivision 9. . Bangkok:Mahidol University, 2008.
Pongpichan Chayanonpiriya. (2008) Encouragement and support of the legal rights of the public by commissioned police officers of the Metropolitan Police Subdivision 9 . Mahidol University/Bangkok.