APA (7th ed.) Zitazioa
Lewis, W. A. (1968). Development Planning: The essentials of economic policy. Unwin University Books.
Chicago Style (17th ed.) Zitazioa
Lewis, W. Arthur. Development Planning: The Essentials of Economic Policy. Great Britain: Unwin University Books, 1968.
MLA (9th ed.) Zitazioa
Lewis, W. Arthur. Development Planning: The Essentials of Economic Policy. Unwin University Books, 1968.
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