(2007). Principles of town water supply and sanitation. Washington DC: The World Bank.
Chicago Stili AlıntıPrinciples of Town Water Supply and Sanitation. Washington DC: The World Bank, 2007.
MLA AlıntıPrinciples of Town Water Supply and Sanitation. Washington DC: The World Bank, 2007.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..