PETERSON, W. L. (1977). Principles Of Economics Macro. Willis L. Peterson. Ricard D. Irwin, Inc.
Lua i Stíl Chicago (17ú heag.)PETERSON, Willis L. Principles Of Economics Macro. Willis L. Peterson. Ricard D. Irwin, Inc, 1977.
Lua MLA (8ú heag.)PETERSON, Willis L. Principles Of Economics Macro. Willis L. Peterson. Ricard D. Irwin, Inc, 1977.
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