1. The National Institute for Occupational Safety and Health Ricin: Biotoxin.
2. U.S. Department of Health and Human Services (2009) Biosafety in microbiological and biomedical laboratories. 5th Edition CDC 21–1112 CDC 21–1112.
3. U.S. National Response Team (2013) NRT Quick Reference Guide.
4. Organization for the Prohibition of Chemical Weapons (2005) Convention on the prohibition of the development, production, stockpiling and use of chemical weapons and on their destruction.
5. Biological Weapons Defense: Infectious Disease and Counterbioterrorism;RD LeClaire,2007