Van, V., & Stoiz, C. L. (1963). Elements of political geography (2nd ed.). Prentice-Hall of India.
Chicago Style (17th ed.) ZitazioaVan, Valkenburg, eta Carl L. Stoiz. Elements of Political Geography. 2nd ed. New Delhi: Prentice-Hall of India, 1963.
MLA (9th ed.) ZitazioaVan, Valkenburg, eta Carl L. Stoiz. Elements of Political Geography. 2nd ed. Prentice-Hall of India, 1963.
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