1. Barden, K., Shelley, F. (2000). Engaging Geopolitics. England: Routledge.
2. Bellamy, F.(2006). The New Geopolitics of Empire. Monthly Review journal, 27(8), 1-18.
3. Dougherty, J., Pfaltzgraff, R. (2004). Contending theories of international relations.Tehran, Iran: Ghoomes.[ In Persian]
4. Dougherty, J., Pfaltzgraff, R.(1981). Contending Theories of International Relations. Longman Higher Education.
5. Gallaher, C., and others(2009). Key Concepts in Political Geography. London and California: Sage Publication Ltd.
6. Gallaher, C., and others.(2011). Key Concepts in Political Geography. Tehran, Iran: Zeitoon .[ In Persian]
7. Ghorbaninejad, R.(2012). Finding the pattern of tension Geopolitical resources in interstate relations. Tehran, Iran: Tarbiat Modares university. [ In Persian]
8. Hafeznia, M. (2006). Principles and Concepts of Geopolitics. Mashhad, Iran: Amirkabir.[ In Persian]
9. Hafeznia, M., Ghorbaninejad, R.(2015). Geopolitical factors of conflict in international relations. Tehran, Iran: Islamic Azad University, Science and Research Branch.[ In Persian]
10. Hagget, P.(1972). Geography: a modern synthesis. London. Pearson education limited.
11. Hagget, P.(2000). Geography: a modern synthesis. Tehran, Iran: Samt.[ in Persian]
12. Haggett, P. (1983). Geography: A Modern Syntheses. New York: Harpercollins College Div.
13. Haggett, P. (2001). Geography: A Global Synthesis. London: Prentice Hall.
14. Holsti,K.J.(1991). Peace and War: Armed Conflicts and International Order 1648-1989. Cambridge: Cambridge University Press.