1. Animal Liberation Front (2009a). Timeless myths about the Animal Liberation Front. http://www.animalliberationfront.com/TimelessMyths.htm (accessed October 2009).
2. Animal Liberation Front (2009b). The Justice Department factsheet. http://www.animalliberationfront.com/Philosophy/AbuseLinked/justiced.htm (accessed October 2009).
3. Animal Liberation Front (2010a). The ALF credo and guidelines. http://www.animalliberationfront.com/ALFront/alf_credo.htm (accessed August 2010).
4. Animal Liberation Front (2010b). History of the Animal Liberation Front. http://www.animalliberationfront.com/ALFront/Premise_History/ALF_History.htm (accessed February 2010).
5. Crenshaw, M. (2006). Have motivations for terrorism changed? In J.Victoroff (Ed.), Tangled roots: Social and psychological factors in the genesis of terrorism (pp. 51–57). Oxford: IOS Press.