Croddy, Eric and Wirtz, James J. Weapons of Mass Destruction: An Encyclopedia of Worldwide Policy, Technology, and History, (Google Books), ABC-CLIO, 2005, p. 304, (ISBN1851094903).
Endicott, Stephen, and Hagerman, Edward. The United States and Biological Warfare: Secrets from the Early Cold War and Korea, (Google Books, relevant excerpt), Indiana University Press, 1998, pp. 75-77, (ISBN0253334721), links accessed December 24, 2008.
Wheelis, Mark, et al. Deadly Cultures: Biological Weapons Since 1945, (Google Books), Harvard University Press, 2006, pp. 84-90, (ISBN0674016998).
Novick, Lloyd and Marr, John S. Public Health Issues Disaster Preparedness, (Google Books), Jones & Bartlett Publishers, 2001, p. 87, (ISBN0763725005).
Howard, Russell D. et al. Homeland Security and Terrorism: Readings and Interpretations, (Google Books), McGraw-Hill Professional, 2006, p. 49, (ISBN0071452826).
Endicott, Stephen, and Hagerman, Edward. The United States and Biological Warfare: Secrets from the Early Cold War and Korea, (Google Books, relevant excerpt), Indiana University Press, 1998, pp. 75-77, (ISBN0253334721), links accessed December 24, 2008.
Irwin, M.E. and G.E. Kampmeier. "Commercial products, from insects", (p. 6). In Resh, V.H. & Carde, R. eds. Encyclopedia of Insects, Academic Press, San Diego, via University of Illinois and Illinois Natural History Survey, accessed December 25, 2008.