Cita APA (7th ed.)
Cohen, W. A., & Drucker, P. F. (2008). A class with Drucker: The lost lessons of the world's greatest management teacher. AMACOM/American Management Association.
Cita Chicago (17th ed.)
Cohen, William A., i Peter F. Drucker. A Class with Drucker: The Lost Lessons of the World's Greatest Management Teacher. New York: AMACOM/American Management Association, 2008.
Cita MLA (9th ed.)
Cohen, William A., i Peter F. Drucker. A Class with Drucker: The Lost Lessons of the World's Greatest Management Teacher. AMACOM/American Management Association, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.