Lewis, W. A. (1952). The principles of economic planning: A study prepared for the Fabian Society (New ed. with a new introd.). Allen & Unwin.
Chicago-Zitierstil (17. Ausg.)Lewis, William Arthur. The Principles of Economic Planning: A Study Prepared for the Fabian Society. New ed. with a new introd. London [u.a.]: Allen & Unwin, 1952.
MLA-Zitierstil (9. Ausg.)Lewis, William Arthur. The Principles of Economic Planning: A Study Prepared for the Fabian Society. New ed. with a new introd. Allen & Unwin, 1952.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.