Żemojtel-Piotrowska, M., Piotrowski, J., Rogoza, R., Baran, T., Hitokoto, H., Maltby, J. (2018). Cross‐cultural invariance of NPI‐13: Entitlement as culturally specific, leadership and grandiosity as culturally universal. International Journal of Psychology. DOI: 10.1002/ijop.12487