Spörel, U., & Täube, V. (2008). Tourism trends in Europe and in Mediterranean Partner Countries, 2000-2006. Statistics in focus: Industry, trade and services.
Čikaški stil citiranja (17. izdanje)Spörel, Ulrich, i Volker Täube. "Tourism Trends in Europe and in Mediterranean Partner Countries, 2000-2006." Statistics in Focus: Industry, Trade and Services 2008.
MLA način citiranja (8. izdanje)Spörel, Ulrich, i Volker Täube. "Tourism Trends in Europe and in Mediterranean Partner Countries, 2000-2006." Statistics in Focus: Industry, Trade and Services, 2008.
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