Παραπομπή σε μορφή APA (7η εκδ.)

Spörel, U., & Täube, V. (2008). Tourism trends in Europe and in Mediterranean Partner Countries, 2000-2006. Statistics in focus: Industry, trade and services.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Spörel, Ulrich, και Volker Täube. "Tourism Trends in Europe and in Mediterranean Partner Countries, 2000-2006." Statistics in Focus: Industry, Trade and Services 2008.

Παραπομπή σε μορφή MLA (8th εκδ.)

Spörel, Ulrich, και Volker Täube. "Tourism Trends in Europe and in Mediterranean Partner Countries, 2000-2006." Statistics in Focus: Industry, Trade and Services, 2008.