1. World Health Organization. Tobacco-Key Facts Geneva: World Health Organization http://www.who.int/mediacentre/factsheets/fs339/en/ http://www.webcitation.org/6ySEY1w7D
2. World Health Organization. Guidelines for Implementation of Article 11 of the WHO Framework Convention on Tobacco Control. Geneva: World Health Organization http://www.who.int/fctc/guidelines/article_11.pdf http://www.webcitation.org/6ySEky0Sm
3. World Health Organization. Guidelines for Implementation of Article 6 of the WHO FCTC http://www.who.int/fctc/guidelines/adopted/Guidelines_article_6.pdf http://www.webcitation.org/6ySEr7MtB
4. Joossens L Raw R The Tobacco Control Scale 2016 in Europe: A Report of the Association of European Cancer Leagues http://www.tobaccocontrolscale.org/wp-content/uploads/2017/03/TCS-2016-in-Europe-COMPLETE-LoRes.pdf http://www.webcitation.org/6vO3FV6Wc
5. The Standardised Packaging of Tobacco Products Regulations 2015.2015 no. 829. Available at http://www.legislation.gov.uk/uksi/2015/829/contents/made http://www.webcitation.org/6vOVtpO7B