Terrorism in Colombia, pp 430-433. Book call no. New York, Facts on File, 1999. Book call no. Colombia - report dated January 1999.
Book call no.
International Encyclopedia of Terrorism . Chicago, IL, Fitzroy Dearborn, 1997. Book call no. Alexandria, VA, Jane's Information Group, 2000. Especially note the sections on 'Internal Affairs' and 'Security and Foreign Forces'.