Hoppe, Grzegorz. «Genetic Determinants of Human Nature and Their Consistency With Human Hedonism». Journal of Corporate Responsibility and Leadership 3, no. 4 (giugno 26, 2017): 27–37. Consultato luglio 4, 2025. https://apcz.umk.pl/JCRL/article/view/JCRL.2016.021.