Lewis, W. A. (1989). Principles of economic planning: A study prepared for the fahian society. Universal Book Stall.
استشهاد بنمط شيكاغوLewis, W Arthur. Principles of Economic Planning: A Study Prepared for the Fahian Society. New Delhi: Universal Book Stall, 1989.
MLA استشهادLewis, W Arthur. Principles of Economic Planning: A Study Prepared for the Fahian Society. Universal Book Stall, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.