Howard, Lt. Col. William L. (January–March 1986). Aubin, Capt. Stephen P. (ed.). "Technical Intelligence: The Critical Gap". Military Intelligence. 12 (1). U.S. Army Intelligence Center & School: 6. Retrieved 17 April 2024.
Ioannis, Michaletos (10 August 2008). "Security and Defense in Albania". rieas.gr. Research Institute for European and American Studies. Retrieved 16 April 2024.