APA (7. basım) Alıntı

(1992). Guidelines: Development of national parks and protected areas for tourism. World Tourism Organization.

Chicago Style (17. basım) Atıf

Guidelines: Development of National Parks and Protected Areas for Tourism. Madrid, Spain: World Tourism Organization, 1992.

MLA (9th ed.) Atıf

Guidelines: Development of National Parks and Protected Areas for Tourism. World Tourism Organization, 1992.