The Encyclopedia of Psychoactive Drugs,Caffeine,The Most Popular Stimulant, de R.J.Gilbert, Ph.D, Burke Publishing Co. Limited (1988), chapitres 9 à 12 – Recueil de jurisprudence et doctrine des appelants, onglet 23.
The Encyclopedia of Psychoactive Drugs,Caffeine,The Most Popular Stimulant by R.J.Gilbert Ph.D, Burke Publishing Co. Limited(1988) Chapters (9-12)- Appellants Book of Authorities Tab 23.