Theerayut Sutthiponpisarn. (2008) Approaches in protecting individual witnesses in criminal cases at the interrogation of the police : a case study of the Metropolitant Police Division 9 /. Mahidol University,:ม.ป.ท.Theerayut Sutthiponpisarn. 2008. Approaches in protecting individual witnesses in criminal cases at the interrogation of the police : a case study of the Metropolitant Police Division 9 /. ม.ป.ท.:Mahidol University,;Theerayut Sutthiponpisarn. Approaches in protecting individual witnesses in criminal cases at the interrogation of the police : a case study of the Metropolitant Police Division 9 /. ม.ป.ท.:Mahidol University, 2008. Print.