(1972). Economics: The science of prices and incomes. London : Methuen & Co. Ltd..
Cita Chicago (17th ed.)Economics: The Science of Prices and Incomes. London : Methuen & Co. Ltd., 1972.
Cita MLA (9th ed.)Economics: The Science of Prices and Incomes. London : Methuen & Co. Ltd., 1972.
Atenció: Aquestes cites poden no estar 100% correctes.