©2013 National Research Council of Thailand
Ekkasith Sumanus. 2002. The stress on task performance of the police officers. Field of Study Criminology and Criminal Justice, Mahidol University;
Ekkasith Sumanus. (2002) The stress on task performance of the police officers . Mahidol University/Bangkok.
Ekkasith Sumanus. The stress on task performance of the police officers. . Bangkok:Mahidol University, 2002.
Ekkasith Sumanus. (2002) The stress on task performance of the police officers . Mahidol University/Bangkok.