Engel, Matthew; Cowan, Rosie (April 24, 2002). "IRA 'sent men to Colombia'". The Guardian. London, UK. Archived from the original on August 26, 2013. Retrieved May 26, 2013.
Engel, Matthew; Cowan, Rosie (April 24, 2002). "IRA 'sent men to Colombia'". The Guardian. London, UK. Archived from the original on August 26, 2013. Retrieved May 26, 2013.