Thawatchai Srisurang. (1999) People participation in crime prevention and suppression of the sixth Metropolitan Police. Mahidol University,:ม.ป.ท.Thawatchai Srisurang. 1999. People participation in crime prevention and suppression of the sixth Metropolitan Police. ม.ป.ท.:Mahidol University,;Thawatchai Srisurang. People participation in crime prevention and suppression of the sixth Metropolitan Police. ม.ป.ท.:Mahidol University, 1999. Print.