http://onek.org.cy/archiki-selida/programmata-ipiresies/simvouleftikes-ipiresies/1410-2/
http://www.psychotherapeia.net.gr/articles-psyxologoi-marousi-psyxotherapeftes-marousi/paidia-goneis/60-syberifores/183-ti-einai-to-bullying-kai-pws-andimetvpizetai