SCHERMERHORN, J. R. (1989). Management for productivity / John R. Schermerhorn. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)SCHERMERHORN, John R. Management for Productivity / John R. Schermerhorn. John Wiley & Sons, 1989.
Lua MLA (8ú heag.)SCHERMERHORN, John R. Management for Productivity / John R. Schermerhorn. John Wiley & Sons, 1989.
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