LEWIS, W. A. (1969). Principles of economic planning: A study prepared for the Fabian Society. Unwin Univ. Books.
Chicago Style (17. basım) AtıfLEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. London: Unwin Univ. Books, 1969.
MLA (9th ed.) AtıfLEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. Unwin Univ. Books, 1969.
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