ebrary, Inc, Silbereisen, R. K., & Lerner, R. M. (2007). Approaches to positive youth development. Sage Publications.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, R. K. Silbereisen, i Richard M. Lerner. Approaches to Positive Youth Development. Los Angeles: Sage Publications, 2007.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. Approaches to Positive Youth Development. Sage Publications, 2007.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.