WEBBER, R. A. (1981). To Be a Manager: Essentials Of Management Ross A. Webber. Richard D, Irwin.
Lua i Stíl Chicago (17ú heag.)WEBBER, Ross A. To Be a Manager: Essentials Of Management Ross A. Webber. Richard D, Irwin, 1981.
Lua MLA (8ú heag.)WEBBER, Ross A. To Be a Manager: Essentials Of Management Ross A. Webber. Richard D, Irwin, 1981.
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