APA (7th ed.) Citation

International Union of Official Travel Organizations. (1973). Guidelines for the preparation of promotional plans. World Tourism Organization.

Chicago Style (17th ed.) Citation

International Union of Official Travel Organizations. Guidelines for the Preparation of Promotional Plans. Madrid: World Tourism Organization, 1973.

MLA (9th ed.) Citation

International Union of Official Travel Organizations. Guidelines for the Preparation of Promotional Plans. World Tourism Organization, 1973.

Warning: These citations may not always be 100% accurate.