World Health Organization. (2012). WHO Study Group on Tobacco Product Regulation Report on the Scientific Basis of Tobacco Product Regulation: Report on the scientific basis of tobacco product regulation: Fourth report of a WHO study group. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. WHO Study Group on Tobacco Product Regulation Report on the Scientific Basis of Tobacco Product Regulation: Report on the Scientific Basis of Tobacco Product Regulation: Fourth Report of a WHO Study Group. Geneva, Switzerland: World Health Organization, 2012.
MLA-referens (8:e uppl.)World Health Organization. WHO Study Group on Tobacco Product Regulation Report on the Scientific Basis of Tobacco Product Regulation: Report on the Scientific Basis of Tobacco Product Regulation: Fourth Report of a WHO Study Group. World Health Organization, 2012.