Md. Sham, F., and B. Mohd Nasir. “The Approaches of Da’wah in Helping the Social Problems Among the Adolescents and Its Applications by the Da’wah Organization in Malaysia”. Al-Hikmah, Vol. 1, Jan. 2009, pp. 99-14, https://spaj.ukm.my/jalhikmah/index.php/jalhikmah/article/view/48.