Drucker, P. F. (1964). Managing for results: Economic tasks and risk-taking decisions. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter F. Managing for Results: Economic Tasks and Risk-taking Decisions. New York: Harper & Row, 1964.
Lua MLA (8ú heag.)Drucker, Peter F. Managing for Results: Economic Tasks and Risk-taking Decisions. Harper & Row, 1964.
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