Cita APA (7a ed.)

Macridis, R. C. (1990). Modern political systems: Europe (7th ed.). Prentice Hall.

Cita Chicago Style (17a ed.)

Macridis, Roy C. Modern Political Systems: Europe. 7th ed. Englewoods Cliffs, New Jersey: Prentice Hall, 1990.

Cita MLA (9a ed.)

Macridis, Roy C. Modern Political Systems: Europe. 7th ed. Prentice Hall, 1990.