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3. Gartrell, R. B (second edition, 1994), Destination Marketing for Convention and Visitor Bureaus, published under the auspices of the International Association of Convention and Visitor Bureaus by Kendall/Hunt Publishing Company.
4. International Association Meetings Market 1996–2005, International Congress and Convention Association (2006).
5. International Meetings Statistics for the year 2005, Union of International Associations (2006).