Ttofi, M.M., Farrington, D.P (2011): Effectiveness of school-based programs to reduce bullying: a systematic and meta-analytic review, Journal of Experimental Criminology, Vol. 7, N. 1, 27-56.
Ttofi, M.M., Farrington, D.P (2011): Effectiveness of school-based programs to reduce bullying: a systematic and meta-analytic review (Wirksamkeit schulischer Programme zur Reduzierung von Mobbing: eine systematische und meta-analytische Bewertung), Journal of Experimental Criminology, Band 7, Nr. 1, 27-56.