Amornthip Amaraphibal และ Thanyalak Ruhipak. (2012) A model explaining violent behavior among youth : A case study of middle school students in Bangkok. Mahidol University:ม.ป.ท.Amornthip Amaraphibal และ Thanyalak Ruhipak. 2012. A model explaining violent behavior among youth : A case study of middle school students in Bangkok. ม.ป.ท.:Mahidol University;Amornthip Amaraphibal และ Thanyalak Ruhipak. A model explaining violent behavior among youth : A case study of middle school students in Bangkok. ม.ป.ท.:Mahidol University, 2012. Print.