1. Warby , J.R. 2011 Australian Society of Cosmetic Chemists, Position Paper (accessed July 19 2012)
2. Organic Monitor Ltd 2011 Technical Insights Report on Natural & Organic Cosmetics Brand Assessment, London, UK
3. Organic Monitor Ltd 2009 Technical Insights Report on Natural & Organic Cosmetic Ingredients, Formulation Challenges & Solutions, London, UK