1. For understanding the concept of national security, All : Jasjit Singh and Thomas Bernauer (eds.), Security of Third World Countries (UNIDIR)
2. Arnold Wolfers, Discard and Collaboration: Essays on International Politics (Baltinore: Johns Hopkins University Press, 1962)P-150
3. Barry Buzan, People, State and Fear: The National Security problem in International Relations (Brighton, Sussex: Wheatsheaf Books Ltd., 1983), P-253
4. Radmila Nakarda and Jan O berg (eds.) Jurriring Together: The olof Of Palme Leet Ures on common security, 1988 (LUPRI)
5. US National Counter Terrorism Centre Report on Terrorism 2009. Page-15
6. SD Muni. Ed. Note 16 Pp 18-22.