Cita APA (7th ed.)

HEATER, D. (1971). Political ideas in the modern World. George G. Harrap.

Cita Chicago (17th ed.)

HEATER, D.B. Political Ideas in the Modern World. London: George G. Harrap, 1971.

Cita MLA (9th ed.)

HEATER, D.B. Political Ideas in the Modern World. George G. Harrap, 1971.