1. U.S. Food and Drug Administration, Code of Federal Regulations (CFR), Title 21, Part 211, Sec. 211.65 - Equipment Construction. 2017.
2. European Commission, EudraLex, EU Guidelines to Good Manufacturing Practice Medicinal Products for Human and Veterinary Use. 2010.
3. European Medicines Agency (EMA), Guideline on Plastic Immediate Packaging Materials. 2005.
4. U.S. Food and Drug Administration - Guidance for Industry: Container Closure Systems for Packaging Human Drugs and Biologics. 1999, 41.
5. United State Pharmacopoeia <1663>Assessment of Extractables Associated with Pharmaceutical Packaging/Delivery Systems. 2018, 41, 7910–7924.