References
- Chi.Yung (Eric) Ng and John Whalley . 2005 . CESIFO Working Paper No.1614 , Canada : University of Western Ontario .
- Jerzy , Chlopecki . Touristology as a Scientific Discipline? . Proceedings Tourism in Scientific Research, Kraków and Rzeszów. , Poland
- UN A/RES/56/212 . 2001 . New York 21 December
- United Nations Millennium Development Goals . 2000 . “ United Nations Millennium Declaration ” . Resolution A/RES/55/2, 18 September 2000
- UNWTO . 2006 . “ In-house research ” .
- UNWTO - A/RES/ 406 (XIII) . 1999 . Santiago : Chile . 27 September – 1 October
- UNWTO World Tourism Barometer .
- Urlich Beck . 2002 . “ Macht und Gegenmacht in globales Zetalter ” . In Neue weltpolitische Ökonomie
- WTO . 2006 . “ International Trade Statistics ” .