Mc Eachern William. (2014). Economics: A Contemporary Introduction (10th.). Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Australia: Cengage Learning, 2014.
Lua MLA (9ú heag.)Mc Eachern William. Economics: A Contemporary Introduction. 10th. Cengage Learning, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.