KOSIDLO, Adam. Paul Collier, The Bottom Billion, Why the Poorest Countries Are Falling and What Can Be Done About It, London-New York 2008, ss. 209. Cywilizacja i Polityka, [S. l.], n. 8, p. 356–361, 2010. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/cywilizacja/article/view/10034. Acesso em: 25 sie. 2024.