1. Symbolic Space: Representations of Space in Geography and Anthropology;Aase;Geografiska Annaler: Series B, Human Geography,1994
2. Australian Bureau of Statistics 2002 Australian Tourism Satellite Account. (Appeared in: Australian Economic Indicators, September 2000). Retrieved on November 5, 2003 from http://www.abs.gov.au/Ausstats/.
3. Belgian Directorate General for Statistics and Economic Data 2008 Mobiliteit (Mobility). Belgian Federal Government Service for Economics, SMEs, Retail Trade and Energy—Directorate General for Statistics and Economic Data. Retrieved on June 16, 2008 from http://statbel.fgov.be/figures/d37_nl.asp#2.
4. The Meaning of Local in a Global Economy;Cabus;European Planning Studies,2001
5. Cabus, P., R. Govers, E. Lievois, and A. Keulen, 2005 Betekenis van attracties in Vlaanderen: Een gevarieerde sociale activiteit met een belangrijke economische impact (The Significance of Visitor Attractions in Flanders: A varied social activity with a relevant economic impact) (Tourism Research Papers No. 9). Leuven, Belgium: Flemish Centre for Tourism Policy Research.