P.M. Blau (2009). Exchange and Power in Social Life: Kraków: Zakład Wydawniczy Nomos. Journal of Public Governance, Poland, v. 15, n. 1, p. 103–106, 2012. Disponível em: https://publicgovernance.pl/index.php/zpub/article/view/23470. Acesso em: 29 oct. 2026.