ŁAPIŃSKI, Jacek Leszek. Sustainable Development Versus Political Aspect of Defining the Nature. Problemy Ekorozwoju, [S. l.], v. 4, n. 1, p. 77–81, 2009. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4713. Acesso em: 17 apr. 2025.