Zeuthen, F. (1955). Economic theory and method. Longmans.
Cita Chicago (17th ed.)Zeuthen, F. Economic Theory and Method. Londres: Longmans, 1955.
Cita MLA (9th ed.)Zeuthen, F. Economic Theory and Method. Longmans, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.