Cita APA (7th ed.)

Heater, D. B. (1967). Political ideas in the modern world (3d ed. rev.). Harrap.

Cita Chicago (17th ed.)

Heater, Derek Benjamin. Political Ideas in the Modern World. 3d ed. rev. London: Harrap, 1967.

Cita MLA (9th ed.)

Heater, Derek Benjamin. Political Ideas in the Modern World. 3d ed. rev. Harrap, 1967.