APA استشهاد

Lewis, A. W. (1966). Development planning: The essentials of economic policy.

استشهاد بنمط شيكاغو

Lewis, Arthur W. Development Planning: The Essentials of Economic Policy. George Allen & Unwin Ltd., London, 1966.

MLA استشهاد

Lewis, Arthur W. Development Planning: The Essentials of Economic Policy. 1966.