DRUCKER PETER F. (2000). EFFECTIVE EXECUTIVE. BUTTERWORTH-HEINEMANN.
Chicagoスタイル(17版)引用形式DRUCKER PETER F. EFFECTIVE EXECUTIVE. OXFORD: BUTTERWORTH-HEINEMANN, 2000.
MLA(9版)引用形式DRUCKER PETER F. EFFECTIVE EXECUTIVE. BUTTERWORTH-HEINEMANN, 2000.
警告: この引用は必ずしも正確ではありません.