Orpinas, P., & Horne, A. M. (2006). Bullying prevention: Creating a positive school climate end developing social competence (1a. ed.). American Psychological Association.
Chicago Style (17th ed.) ZitazioaOrpinas, Pamela, eta Arthur M. Horne. Bullying Prevention: Creating a Positive School Climate End Developing Social Competence. 1a. ed. Washington, D.C: American Psychological Association, 2006.
MLA (9th ed.) ZitazioaOrpinas, Pamela, eta Arthur M. Horne. Bullying Prevention: Creating a Positive School Climate End Developing Social Competence. 1a. ed. American Psychological Association, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.