Operat ochrony żubra Bison bonasus w Białowieskim Parku Narodowym. European Bison Conservation Newsletter, [S. l.], v. 4, p. 101–116, 2011. Disponível em: https://ojs.wisent.org/index.php/czasopismo/article/view/137. Acesso em: 7 paź. 2026.