Laxton , A. (2005). Economics for Today. Tomason.
Cita Chicago (17th ed.)Laxton , Allon. Economics for Today. Australi: Tomason, 2005.
Cita MLA (9th ed.)Laxton , Allon. Economics for Today. Tomason, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.