Wheelis, Mark, et al. Deadly Cultures: Biological Weapons Since 1945, (Google Books), Harvard University Press, 2006, pp. 217-18, (ISBN0674016998).
Russell, Alan and Vogler, John. The International Politics of Biotechnology: Investigating Global Futures, (Google Books), Manchester University Press, 2000, pp. 173-74, (ISBN0719058686).
Whitby, Simon M. Biological Warfare Against Crops, (Google Books), Macmillan, 2002, pp. 156-57, (ISBN0333920856).
Link, Kurt. Understanding New, Resurgent, and Resistant Diseases: How Man and Globalization Create and Spread Illness, (Google Books), Greenwood Publishing Group, 2007, p. 90, (ISBN0275991261).