Naciones Unidas. (2007). Globally harmonized system of classification and labelling of chemicals GHS (2nd ed. rev.). United Nations.
Chicago Style (17th ed.) CitationNaciones Unidas. Globally Harmonized System of Classification and Labelling of Chemicals GHS. 2nd ed. rev. New York ; Geneva: United Nations, 2007.
MLA (9th ed.) CitationNaciones Unidas. Globally Harmonized System of Classification and Labelling of Chemicals GHS. 2nd ed. rev. United Nations, 2007.