Citazione Stile APA (7a Edizione)

LEWIS, W. A. (1965). Principles of economic planning: A study prepared for the Fabian society. Unwin, University Books.

Citazione stile Chigago Style (17a edizione)

LEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. London: Unwin, University Books, 1965.

Citatione MLA (9a ed.)

LEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. Unwin, University Books, 1965.