Παραπομπή APA

World Tourism Organization. (2002). Tourism market trends: World overview and tourism topics (2002 edition.). Madrid, Spain: World Tourism Organisation.

Παραπομπή Chicago Style

World Tourism Organization. Tourism Market Trends: World Overview and Tourism Topics. 2002 edition. Madrid, Spain: World Tourism Organisation, 2002.

Παραπομπή MLA

World Tourism Organization. Tourism Market Trends: World Overview and Tourism Topics. 2002 edition. Madrid, Spain: World Tourism Organisation, 2002.

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