APA (7th ed.) Zitazioa

Macridis, R. C. (1963). Europe: Modern political systems. Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Macridis, Roy C. Europe: Modern Political Systems. Englewood Cliffs: Prentice-Hall, 1963.

MLA (9th ed.) Zitazioa

Macridis, Roy C. Europe: Modern Political Systems. Prentice-Hall, 1963.