NARDHANS WILLIAM D. (1989). ECONOMICS (13.). MCGRAW-HILL.
Chicago-čujuhus (17. p.)NARDHANS WILLIAM D. ECONOMICS. 13. MCGRAW-HILL BK.CO: MCGRAW-HILL, 1989.
MLA-čujuhus (9. p.)NARDHANS WILLIAM D. ECONOMICS. 13. MCGRAW-HILL, 1989.
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