Lua APA (7ú heag.)

McEACHERN, W. A. (2003). Economics: A contemporary introduction.-- ed.6. Thomson South-Western.

Lua i Stíl Chicago (17ú heag.)

McEACHERN, William A. Economics: A Contemporary Introduction.-- Ed.6. Australia: Thomson South-Western, 2003.

Lua MLA (9ú heag.)

McEACHERN, William A. Economics: A Contemporary Introduction.-- Ed.6. Thomson South-Western, 2003.

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