Gaya APA

Drucker, Peter F.. (2008). The essential drucker: the best of sixty years of Peter Drucker's essential writings on management . New York: HarperBusiness Essentials.

Gaya Chicago

Drucker, Peter F.. The essential drucker: the best of sixty years of Peter Drucker's essential writings on management. New York: HarperBusiness Essentials, 2008. Text.

Gaya MLA

Drucker, Peter F.. The essential drucker: the best of sixty years of Peter Drucker's essential writings on management. New York: HarperBusiness Essentials, 2008. Text.

Gaya Turabian

Drucker, Peter F.. The essential drucker: the best of sixty years of Peter Drucker's essential writings on management. New York: HarperBusiness Essentials, 2008. Print.