WHITNEY, S. N. (1975). Economic Principles Macro Simon Newcomb Whitney. Grid.
Lua i Stíl Chicago (17ú heag.)WHITNEY, Simon Newcomb. Economic Principles Macro Simon Newcomb Whitney. Grid, 1975.
Lua MLA (8ú heag.)WHITNEY, Simon Newcomb. Economic Principles Macro Simon Newcomb Whitney. Grid, 1975.
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