Alajääsko, P. (2008). Main features of EU-27 Business services. Statistics in focus: Industry, trade and services.
Cita Chicago (17th ed.)Alajääsko, Pekka. "Main Features of EU-27 Business Services." Statistics in Focus: Industry, Trade and Services 2008.
Cita MLA (8th ed.)Alajääsko, Pekka. "Main Features of EU-27 Business Services." Statistics in Focus: Industry, Trade and Services, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.