1. Akers R. L., Cochran J. K. (1985). Adolescent marijuana use: A test of three theories of deviant behavior. Deviant Behavior, 6(4), 323–346. https://doi.org/10.1080/01639625.1985.9967683
2. Aldridge J., Measham F., Williams L. (2011). Illegal leisure revisited: Changing patterns of alcohol and drug use in adolescents and young adults. Taylor & Francis Group. http://ebookcentral.proquest.com/lib/cuhk-ebooks/detail.action?docID=668571
3. American Addiction Centers. (2019). What is psychological dependence? Editorial Staff. https://americanaddictioncenters.org/the-addiction-cycle/psychological-dependence
4. Arkkelin D. (2014). Using SPSS to understand research and data analysis. http://scholar.valpo.edu/psych_oer/1