Vekeman, G. (2008). The telecom sector in the EU. Statistics in focus: Transport.
Lua i Stíl Chicago (17ú heag.)Vekeman, Guy. "The Telecom Sector in the EU." Statistics in Focus: Transport 2008.
Lua MLA (8ú heag.)Vekeman, Guy. "The Telecom Sector in the EU." Statistics in Focus: Transport, 2008.
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