LEWIS, W. A. (1969). Principles of economic planning: A study prepared for the Fabian Society. Unwin Univ. Books.
Citazione stile Chigago Style (17a edizione)LEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. London: Unwin Univ. Books, 1969.
Citatione MLA (9a ed.)LEWIS, W. Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. Unwin Univ. Books, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.