Mc Eachern William. (2014). Economics: A Contemporary Introduction (10th.). Cengage Learning.
Citazione stile Chigago Style (17a edizione)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Australia: Cengage Learning, 2014.
Citatione MLA (9a ed.)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Cengage Learning, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.