Tohutoro APA (7th ed.)

Macridis, R. C., & Ward, R. E. (1972). Modern political systems. (3d ed.). Prentice-Hall.

Tohutoru Kātū Chicago (17th ed.)

Macridis, Roy C., me Robert Edward Ward. Modern Political Systems. 3d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1972.

Tohutoro MLA (9th ed.)

Macridis, Roy C., me Robert Edward Ward. Modern Political Systems. 3d ed. Prentice-Hall, 1972.