Villar, O., & Cottle, D. (2011). Cocaine, death squads, and the war on terror: U.S. imperialism and class struggle in Colombia. Monthly Review Press.

Villar, Oliver, and Drew Cottle. Cocaine, Death Squads, and the War on Terror: U.S. Imperialism and Class Struggle in Colombia. New York: Monthly Review Press, 2011.

Villar, Oliver, and Drew Cottle. Cocaine, Death Squads, and the War on Terror: U.S. Imperialism and Class Struggle in Colombia. Monthly Review Press, 2011.