United Nations Industrial Development Organization. (1981). Information sources on essential oils. United Nations.
Style de citation Chicago (17e éd.)United Nations Industrial Development Organization. Information Sources on Essential Oils. New York: United Nations, 1981.
Style de citation MLA (9e éd.)United Nations Industrial Development Organization. Information Sources on Essential Oils. United Nations, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.