1. Bullying as a correlate of dropout from school among adolescents in delta state:implication for counselling;Alika;Education Around The World,2012
2. Arıman, F. (2007). This thesis has been prepared to study the relationship between the extortion tendencies of primary school 7th and 8th grade students and their perception of the school climate. (Unpublished master's thesis).Yeditepe University, Turkey.
3. Ayas, T. (2010).Okullardayaygınsorunolanzorbalığıönlemek (Prevent bullying in schools).Ankara: Maya Akademi.
4. Investigation of bullying among high school students with regard to sex, grade level and school type;Ayas;Elementary Education Online,2011
5. Psychopathology of bullying and emotional abuse among school children;Ayenibiowo;Ife Psychologia,2011