Roskin, M. (1997). Countries and concepts: An introduction to comparative politics (6th ed.). Prentice Hall.
Cita Chicago (17th ed.)Roskin, Michael. Countries and Concepts: An Introduction to Comparative Politics. 6th ed. Upper Saddle River, NJ: Prentice Hall, 1997.
Cita MLA (9th ed.)Roskin, Michael. Countries and Concepts: An Introduction to Comparative Politics. 6th ed. Prentice Hall, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.