SAMUELSON, W. F. (1999). Managerial economicsWilliam F. Samuelson, Stephen G. Marks. The Dryden Press.
Lua i Stíl Chicago (17ú heag.)SAMUELSON, William F. Managerial EconomicsWilliam F. Samuelson, Stephen G. Marks. The Dryden Press, 1999.
Lua MLA (8ú heag.)SAMUELSON, William F. Managerial EconomicsWilliam F. Samuelson, Stephen G. Marks. The Dryden Press, 1999.
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