International Union of Official Travel Organizations & World Tourism Organization. (1975). Aims, activities and fields of competence of national tourists organizations. [IUOTO].
Chicago-Zitierstil (17. Ausg.)International Union of Official Travel Organizations und World Tourism Organization. Aims, Activities and Fields of Competence of National Tourists Organizations. Geneva: [IUOTO], 1975.
MLA-Zitierstil (9. Ausg.)International Union of Official Travel Organizations und World Tourism Organization. Aims, Activities and Fields of Competence of National Tourists Organizations. [IUOTO], 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.