KALENDA, Česlovas. Moral Responsibility for Protection of Nature. Problemos, [S. l.], v. 43, p. 5–12, 1990. DOI: 10.15388/Problemos.1990.43.7090. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/7090. Acesso em: 6 nov. 2025.