Uba, I. ., S. N. . Yaacob, M. A. . Talib, R. . Abdullah, and S. . Mofrad. “Socio-Cognitive Risk Factors of Conventional Substance Abuse”. International Journal of Asian Social Science, vol. 3, no. 8, Aug. 2013, pp. 1770-8, https://archive.aessweb.com/index.php/5007/article/view/2532.