1. Martin JW , Christopher GW , Eitzen EM . History of biological weapons: from poisoned darts to intentional epidemics. In: Dembek ZF , ed. Medical Aspects of Biological Warfare. Washington, DC: Borden Institute; 2007:1–20
2. Croddy E . Chemical and Biological Warfare: A Comprehensive Survey for the Concerned Citizen. New York: Copernicus Books; 2002
3. Formaldehyde solution effectively inactivates spores of Bacillus anthracis on the Scottish island of Gruinard;Manchee;Appl Environ Microbiol,1994
4. Cook MS , Woolf AF . Preventing proliferation of biological weapons: US assistance to the former Soviet states. Published April 10, 2002. http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA454722. Accessed August 1, 2014.
5. PBS: American Experience. The Living Weapon. http://www.pbs.org/wgbh/americanexperience/features/transcript/weapon-transcript/. Accessed August 1, 2014.