Trairat Pengnoo. 2009. Factors of the social background affecting the investigation and arrest of methamphetaminists : a case study of the investigation officers in the Metropolitan Police Devision 9. Faculty of Social Sciences, Mahidol University;
Trairat Pengnoo. (2009) Factors of the social background affecting the investigation and arrest of methamphetaminists : a case study of the investigation officers in the Metropolitan Police Devision 9 . Mahidol University/Bangkok.
Trairat Pengnoo. Factors of the social background affecting the investigation and arrest of methamphetaminists : a case study of the investigation officers in the Metropolitan Police Devision 9. . Bangkok:Mahidol University, 2009.
Trairat Pengnoo. (2009) Factors of the social background affecting the investigation and arrest of methamphetaminists : a case study of the investigation officers in the Metropolitan Police Devision 9 . Mahidol University/Bangkok.