@misc{Mączyński_Jerzy_A_2017,
 author={Mączyński, Jerzy and Sułkowski, Łukasz},
 number={No 2},
 howpublished={online},
 year={2017},
 publisher={Committee for Psychological Science PAS},
 title={A Seven Nations Study of Leadership Attributes},
 doi={10.1515/ppb-2017-0035},
}