1. Akers, R. L. (1977). Deviant behavior: A social learning approach (2nd ed.). Wadsworth.
2. Akers, R. L. (1998). Social learning and social structure: A general theory of crime and deviance. Northeastern University Press.
3. Althof, W., & Berkowitz, M. W. (2006). Moral education and character education: Their relationship and roles in citizenship education. Journal of Moral Education, 35, 495–518. https://doi.org/10.1080/03057240601012204
4. Aos, S., Lieb, R., Mayfield, J., Miller, M., & Pennucci, A. (2004). Benefits and costs of prevention and early intervention programs for youth. Washington State Institute for Public Policy. https://www.sedgwickcounty.org/media/31343/wsipp-benefits-and-costs-sept-2004-appendix-a.pdf
5. Bandura, A. (1977). Social learning theory. Prentice-Hall.