Cita APA (7th ed.)

Macridis, R. C. (1987). Modern political systems: Europe (Sixth edition.). Prentice-Hall.

Cita Chicago (17th ed.)

Macridis, Roy C. Modern Political Systems: Europe. Sixth edition. Englewood Cliffs, New Jersey: Prentice-Hall, 1987.

Cita MLA (9th ed.)

Macridis, Roy C. Modern Political Systems: Europe. Sixth edition. Prentice-Hall, 1987.