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doi.org/10.1037/0012-1649.41.4.672, hdl.handle.net/1765/70868
Developmental Psychology
Pediatric Psychiatry

Veenstra, R., Lindenberg, S., de Winter, A., Oldehinkel, A., Verhulst, F., & Ormel, J. H. (2005). Bullying and victimization in elementary schools: A comparison of bullies, victims, bully/victims, and uninvolved preadolescents. Developmental Psychology, 41(4), 672–682. doi:10.1037/0012-1649.41.4.672