Dennapha Patthum และ Anorag Cooper Meeyai. (2015) A social network analysis of peer group structure and cigarette smoking in a vocational education school in Nakhonratchasima. Mahidol University:ม.ป.ท.Dennapha Patthum และ Anorag Cooper Meeyai. 2015. A social network analysis of peer group structure and cigarette smoking in a vocational education school in Nakhonratchasima. ม.ป.ท.:Mahidol University;Dennapha Patthum และ Anorag Cooper Meeyai. A social network analysis of peer group structure and cigarette smoking in a vocational education school in Nakhonratchasima. ม.ป.ท.:Mahidol University, 2015. Print.