Le marché espagnol de l'écotourisme / Organisation Mondiale du Tourisme
Le marché de l'écotourisme des États-Unis / Organisation Mondiale du Tourisme
Jeunes voyageurs au départ d'Allemagne, de Grande-Bretagne et de France / Organisation Mondiale du Tourisme
Youth outbound travel of the germans, the british and the french / World Tourism Organization
Inbound tourism tourism to the Middle East and North Africa / World Tourism Organization
Tourism satellite account (TSA) / World Tourism Organization
Australia - the Asia and the Pacific intra-regional outbound series / World Tourism Organization
Hong Kong - the Asia and Pacific intra-regional outbound series / World Tourism Organization
Thailand - the Asia and Pacific intra-regional outbound series / World Tourism Organization
India - the Asia and Pacific intra-regional outbound series / World Tourism Organization
Japan - the Asia and Pacific intra-regional outbound series / World Tourism Organization
China - the Asia and Pacific intra-regional outbound series / World Tourism Organization