Roewer, U. (2008). Environmental Protection Expenditure by Industry in the European Union 1997-2004. Statistic in focus: Environment and energy.
Citação do estilo Chicago (17ª ed.)Roewer, Ute. "Environmental Protection Expenditure by Industry in the European Union 1997-2004." Statistic in Focus: Environment and Energy 2008.
Citação MLA (8ª ed.)Roewer, Ute. "Environmental Protection Expenditure by Industry in the European Union 1997-2004." Statistic in Focus: Environment and Energy, 2008.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.