Gilfoyle, I. (2004). Geographic information management in local government. London / New York: CRC Press.
शिकागो स्टाइल उद्धरणGilfoyle, Ian. Geographic Information Management in Local Government. London / New York: CRC Press, 2004.
एमएलए उद्धरणGilfoyle, Ian. Geographic Information Management in Local Government. London / New York: CRC Press, 2004.
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