1. The 2011 ESPAD Report. The Swedish Council for Information on Alcohol and Other Drugs (CAN);Björn,2011
2. Cheng, R.X., 2015. First Report on China's Drug Situation Released. Available at: http://english.cri.cn/12394/2015/06/24/3801s884455.htm (Accessed on Oct. 17, 2017).
3. China News, 2007. Hong Kong elite students finds illicit drugs refreshing the school negative isolated abuse of students Available at: http://news.163.com/07/1123/10/3TVPPBU4000120GU.html (Accessed on Oct. 17, 2017).
4. China News, 2010. There are about 3000,000 students are addicting in drugs sea while drugs have already spread over the students in the primary and secondary schools.
5. China News, 2013. The prevalence of drug abuse in Hong Kong continue downing. Available at: http://www.chinanews.com/ga/2013/08-16/5170290.shtml (Accessed on Oct. 17, 2017).