Cita APA (7th ed.)

Macridis, R. C. (1978). Modern political systems: Europe. Prentice Hall.

Cita Chicago (17th ed.)

Macridis, Roy C. Modern Political Systems: Europe. Englewood Cliffs, NJ: Prentice Hall, 1978.

Cita MLA (9th ed.)

Macridis, Roy C. Modern Political Systems: Europe. Prentice Hall, 1978.