World Tourism Organization. (1981). Determination of the importance of tourism as an economic activity within the framework of the national accounting system. The Organization.
Chicago Style (17th ed.) CitationWorld Tourism Organization. Determination of the Importance of Tourism as an Economic Activity Within the Framework of the National Accounting System. Madrid: The Organization, 1981.
MLA (9th ed.) CitationWorld Tourism Organization. Determination of the Importance of Tourism as an Economic Activity Within the Framework of the National Accounting System. The Organization, 1981.
Warning: These citations may not always be 100% accurate.