World Resources Institute & Hammond, A. L. (1995). Environmental indicators: A systematic approach to measuring and reporting on environmental policy performance in the context of sustainable development. World Resources Institute.
Cita Chicago (17th ed.)World Resources Institute i Allen L. Hammond. Environmental Indicators: A Systematic Approach to Measuring and Reporting on Environmental Policy Performance in the Context of Sustainable Development. [Washington, D.C.]: World Resources Institute, 1995.
Cita MLA (9th ed.)World Resources Institute i Allen L. Hammond. Environmental Indicators: A Systematic Approach to Measuring and Reporting on Environmental Policy Performance in the Context of Sustainable Development. World Resources Institute, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.