Dyfyniad APA

Lewis, W. A. (1989). Principles of economic planning: A study prepared for the fahian society. Universal Book Stall.

Dyfyniad Arddull Chicago

Lewis, W Arthur. Principles of Economic Planning: A Study Prepared for the Fahian Society. New Delhi: Universal Book Stall, 1989.

Dyfyniad MLA

Lewis, W Arthur. Principles of Economic Planning: A Study Prepared for the Fahian Society. Universal Book Stall, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.