Lewis, W. A. (1976). The principles of economic planning: A study prepared for the Fabian Society. With an introd (3.ed., 3.impr.). Allen & Unwin.
Chicago-Zitierstil (17. Ausg.)Lewis, William Arthur. The Principles of Economic Planning: A Study Prepared for the Fabian Society. With an Introd. 3.ed., 3.impr. London: Allen & Unwin, 1976.
MLA-Zitierstil (9. Ausg.)Lewis, William Arthur. The Principles of Economic Planning: A Study Prepared for the Fabian Society. With an Introd. 3.ed., 3.impr. Allen & Unwin, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.