Groom, E., Halpern, J., & Ehrhardt, D. (2006). Explanatory notes on key topics in the regulation of water and sanitation services. World Bank.
Citace podle Chicago (17th ed.)Groom, Eric, Jonathan Halpern, a David Ehrhardt. Explanatory Notes on Key Topics in the Regulation of Water and Sanitation Services. Washington, D.C: World Bank, 2006.
Citace podle MLA (9th ed.)Groom, Eric, et al. Explanatory Notes on Key Topics in the Regulation of Water and Sanitation Services. World Bank, 2006.
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