FYFE, W. S. Our Common Future: Building Respect For Our Planet / Notre Futur Commun: Instaurer du Respect pour Notre Planète. Geoscience Canada, [S. l.], v. 18, n. 3, 1991. Disponível em: https://journals.lib.unb.ca/index.php/GC/article/view/3729. Acesso em: 11 jul. 2020.