Le marché européen du tourisme des jeunes / Stephen Wheatcroft et John Seekings
Megatrends of tourism in Europe to the year 2000 and beyond / European Travel Commission
The national and regional structures of official tourist organisations in european countries / by Robert Hollier for the European Travel Commission
City tourism & culture : the european experience / World Tourism Organization, European Travel Commission
Budgets of national tourism organizations. / World Tourism Organization