Lua APA (7ú heag.)
ebrary, Inc, & Coelli, T. (2003). A primer on efficiency measurement for utilities and transport regulators. World Bank.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Tim Coelli. A Primer on Efficiency Measurement for Utilities and Transport Regulators. Washington, D.C.: World Bank, 2003.
Lua MLA (9ú heag.)
ebrary, Inc, agus Tim Coelli. A Primer on Efficiency Measurement for Utilities and Transport Regulators. World Bank, 2003.
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