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 20 September 2024]. Available from: https://publications.waset.org/pdf/10012916.