United Nations Office on Drugs and Crime. (2016). World drug report 2016. United Nations Office on Drugs and Crime.
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Dyfyniad Arddull Chicago
United Nations Office on Drugs and Crime. World Drug Report 2016. Ginebra: United Nations Office on Drugs and Crime, 2016.
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Dyfyniad MLA
United Nations Office on Drugs and Crime. World Drug Report 2016. United Nations Office on Drugs and Crime, 2016.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.