Winger, B. J. (1979). Cases in managerial economics. Grid Pub..
Lua i Stíl Chicago (17ú heag.)Winger, Bernard J. Cases in Managerial Economics. Columbus, Ohio: Grid Pub., 1979.
Lua MLA (8ú heag.)Winger, Bernard J. Cases in Managerial Economics. Grid Pub., 1979.
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