1. ‘Legal highs’ on the net-evaluation of UK-based websites, products and product information;Schmidt;Forensic Sci. Int.,2010
2. C. Davies L. English A. Lodwick J. McVeigh M. A. Bellis United Kingdom Drug Situation: 2010 Edition 2010 http://www.nwph.net/ukfocalpoint/writedir/fcf022035%20FOCAL%20POINT%20REPORT%202010%20A4.pdf
3. http://www.legislation.gov.uk/uksi/2009/3209/contents/made
4. http://www.legislation.gov.uk/uksi/2009/3209/contents/made
5. Buying ‘legal’ recreational drugs does not mean that you are not breaking the law;Ramsey;Q. J. Med.,2010