Cita APA (7th ed.)

Macridis, R. C. (1978). Modern political systems: Europe (4a. ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Macridis, Roy C. Modern Political Systems: Europe. 4a. ed. Englewood Cliffs: Prentice-Hall, 1978.

Cita MLA (9th ed.)

Macridis, Roy C. Modern Political Systems: Europe. 4a. ed. Prentice-Hall, 1978.