Kingdom, W. D. (2005). Models of aggregation for water and sanitation provision. Washington DC: World Bank.
शिकागो स्टाइल उद्धरणKingdom, William D. Models of Aggregation for Water and Sanitation Provision. Washington DC: World Bank, 2005.
एमएलए उद्धरणKingdom, William D. Models of Aggregation for Water and Sanitation Provision. Washington DC: World Bank, 2005.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.