Van den Berg, C. (2010). The IBNET water supply and sanitation performance blue book: The international benchmarking network of water and sanitation utilities databook. World Bank.
Chicago-Zitierstil (17. Ausg.)Van den Berg, Caroline. The IBNET Water Supply and Sanitation Performance Blue Book: The International Benchmarking Network of Water and Sanitation Utilities Databook. Washington, D.C: World Bank, 2010.
MLA-Zitierstil (9. Ausg.)Van den Berg, Caroline. The IBNET Water Supply and Sanitation Performance Blue Book: The International Benchmarking Network of Water and Sanitation Utilities Databook. World Bank, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.