Dyfyniad APA

Lewis, W. A. (1976). Development planning: The essentials of economic policy. George Allen.

Dyfyniad Arddull Chicago

Lewis, W. Arthur. Development Planning: The Essentials of Economic Policy. London: George Allen, 1976.

Dyfyniad MLA

Lewis, W. Arthur. Development Planning: The Essentials of Economic Policy. George Allen, 1976.

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