Cita APA (7a ed.)

DRUCKER PETER F. (2004). DAILY DRUCKER. HARPER BUSINESS.

Cita Chicago Style (17a ed.)

DRUCKER PETER F. DAILY DRUCKER. NEW YORK: HARPER BUSINESS, 2004.

Cita MLA (9a ed.)

DRUCKER PETER F. DAILY DRUCKER. HARPER BUSINESS, 2004.