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Lua i Stíl Chicago (17ú heag.)Alexander, Ian, agus Clive Harris. The Regulation of Investment in Utilities: Concepts and Applications. Washington, D.C: World Bank, 2005.
Lua MLA (9ú heag.)Alexander, Ian, agus Clive Harris. The Regulation of Investment in Utilities: Concepts and Applications. World Bank, 2005.
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