United Nations Industrial Development Organization. (1981). Information sources on essential oils. United Nations.
Chicago-Zitierstil (17. Ausg.)United Nations Industrial Development Organization. Information Sources on Essential Oils. New York: United Nations, 1981.
MLA-Zitierstil (9. Ausg.)United Nations Industrial Development Organization. Information Sources on Essential Oils. United Nations, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.