Cita APA (7th ed.)

Harrod, R. (1972). The life of John Maynard Keynes. Penguin.

Cita Chicago (17th ed.)

Harrod, Roy. The Life of John Maynard Keynes. Harmondsworth: Penguin, 1972.

Cita MLA (8th ed.)

Harrod, Roy. The Life of John Maynard Keynes. Penguin, 1972.