Mc Eachern William. (2014). Economics: A Contemporary Introduction (10th.). Cengage Learning.
Cita Chicago (17th ed.)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Australia: Cengage Learning, 2014.
Cita MLA (9th ed.)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Cengage Learning, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.