Brown, Steven D., ed. (2008). Combating International Crime: The Longer Arm of the Law. Abingdon: Routledge-Cavendish.
Casey, John (2010). Policing the World: The Practice of International and Transnational Policing. Durham, NC: Carolina Academic Press.
Hufnagel, Saskia and Carole McCartney (2015). Police Cooperation against Transnational Criminals. In N. Boister and R.J. Currie (Eds.). Routledge Handbook of Transnational Criminal Law (pp. 107-120). London: Routledge.
Rutsel Silvestre, Martha, J. (2010). The Legal Foundations of INTERPOL. Hart Publishing.
Schmidt, Michael S. (2009). Report Highlights Special Risk of Undercover Police Work. The New York Times, December 1, 27.
Schreiber, Amanda J. (2001). Dealing with the Devil: An Examination of the FBI's Troubled Relationship with Its Confidential Informants. Columbia Journal of Law and Social Problems, vol. 34, 368.
Werner, Ariel C. (2014). What's in a Name? Challenging the Citizen-Informant Doctrine. New York University Law Review, vol. 89, 2336-2380.