APA (7th ed.) Citation

Lewis, W. A. (1952). The principles of economic planning (New edition with a new introd.). Allen & Unwin.

Chicago Style (17th ed.) Citation

Lewis, William Arthur. The Principles of Economic Planning. New edition with a new introd. London: Allen & Unwin, 1952.

MLA (9th ed.) Citation

Lewis, William Arthur. The Principles of Economic Planning. New edition with a new introd. Allen & Unwin, 1952.