Webber, R. A. (1979). Management: Basic elements of managing organizations. Richard D. Irwin.
Lua i Stíl Chicago (17ú heag.)Webber, Ross A. Management: Basic Elements of Managing Organizations. Richard D. Irwin, 1979.
Lua MLA (9ú heag.)Webber, Ross A. Management: Basic Elements of Managing Organizations. Richard D. Irwin, 1979.
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