Drucker, P. F. (2017). Managing Oneself and What Makes an Effective Executive. Harvard Business Review Press.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter F. Managing Oneself and What Makes an Effective Executive. Boston, Massachusetts: Harvard Business Review Press, 2017.
Lua MLA (9ú heag.)Drucker, Peter F. Managing Oneself and What Makes an Effective Executive. Harvard Business Review Press, 2017.
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