Pichai Pichienpong. (2008) Investigation of top management of correctional institutions, Correction Department, Ministy of Justice, Thailand. Mahidol University,:ม.ป.ท.Pichai Pichienpong. 2008. Investigation of top management of correctional institutions, Correction Department, Ministy of Justice, Thailand. ม.ป.ท.:Mahidol University,;Pichai Pichienpong. Investigation of top management of correctional institutions, Correction Department, Ministy of Justice, Thailand. ม.ป.ท.:Mahidol University, 2008. Print.