Cita APA (7a ed.)

Macridis, R. C. (1987). Modern political systems: Europe (6th ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Macridis, Roy C. Modern Political Systems: Europe. 6th ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1987.

Cita MLA (9a ed.)

Macridis, Roy C. Modern Political Systems: Europe. 6th ed. Prentice-Hall, 1987.