1. Cosmetic Ingredient Review. 2012 annual report [Internet]. Washington (DC): Cosmetic Ingredient Review [cited 2012]. Available at: http://www.cir-safety.org/sites/default/files/2012%20CIR%20Annual%20Report.pdf.
2. The Merck index. An encyclopedia of chemicals, drugs, and biologicals;Budavari,1996
3. U.S. Code of Federal Regulations. U.S. Food and Drug Administration. 21 CFR Part 181. Prior-Sanctioned Food Ingredients. Section 181.30 – Substances used in the manufacture of paper and paperboard products used in food packaging. 1 April 2013.
4. U.S. Code of Federal Regulations. U.S. Food and Drug Administration. 21 CFR Part 176. Indirect Food Additives: Paper and Paperboard Components. Section 176.170 – Components of paper and paperboard in contact with aqueous and fatty foods. 1 April 2013.
5. U.S. Code of Federal Regulations. U.S. Food and Drug Administration. 21 CFR Part 175. Indirect Food Additives: Adhesives and Components of Coatings. Section 175.150 – Adhesives. 1 April 2013.