WASET
    Annis Lai Chu Fung,  The Differences in Normative Beliefs among Schoolchildren with Reactive, Proactive, Reactive-Proactive Aggression, and without Aggression.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 100(4). 1121 - 1124
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10000950.