Cita APA (7th ed.)
Macridis, R. C. (1963). Europe: Modern political systems. Prentice-Hall.
Cita Chicago (17th ed.)
Macridis, Roy C. Europe: Modern Political Systems. Englewood Cliffs: Prentice-Hall, 1963.
Cita MLA (9th ed.)
Macridis, Roy C. Europe: Modern Political Systems. Prentice-Hall, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.