Amber L. Dummett and  Efstathia Tzemou,  Academic Achievement Differences in Grandiose and Vulnerable Narcissists and the Mediating Effects of Self-Esteem and Self-Efficacy.   journal   = {International Journal of Psychological and Behavioral Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2023, vol. 193(1). 65 - 75
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10012916.