Hughes, G., & Bucknall, J. (2000). Poland: Complying with EU environmental legislation. World Bank.
Citação do estilo Chicago (17ª ed.)Hughes, Gordon, e Julia Bucknall. Poland: Complying with EU Environmental Legislation. Washington, D.C.: World Bank, 2000.
Citação MLA (9ª ed.)Hughes, Gordon, e Julia Bucknall. Poland: Complying with EU Environmental Legislation. World Bank, 2000.