Mankiw, N. G. (2006). Workbook and study guide to economics. Thomson Learning.
Lua i Stíl Chicago (17ú heag.)Mankiw, N Gregory. Workbook and Study Guide to Economics. London: Thomson Learning, 2006.
Lua MLA (9ú heag.)Mankiw, N Gregory. Workbook and Study Guide to Economics. Thomson Learning, 2006.
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