Drucker, P. F. (1982). The effective executive. Heinemann.
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Chicago Style (17th ed.) Citation
Drucker, Peter F. The Effective Executive. London: Heinemann, 1982.
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MLA引文
Drucker, Peter F. The Effective Executive. Heinemann, 1982.
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警告：這些引文格式不一定是100％准確.