1. Agnew, R., & Petersen, D. M. (1989). Leisure and delinquency. Social Problems, 36(4), 332–350.
2. Alexander, C., Piazza, M., Mekos, D., & Valente, T. (2001). Peers, schools, and adolescent cigarette smoking. Journal of Adolescent Health, 29(1), 22–30.
3. American Time Use Survey (2010) U.S. Department of Labor http://www.bls.gov./tus/charts/chart8.pdf
4. Anderson, A. L. (2002). Individual and contextual influences on delinquency: the role of the single-parent family. Journal of Criminal Justice, 30(6), 575–587.
5. Anderson, Amy L. and christina Falci 2011. “Time use Contextual Effects: Examining Friendship Clusters and Schools in the study of Delinquency,” presented at the annual meeting of the American Society of criminology (November), Washington D.C.