Cita APA (7th ed.)

Drucker, P. F. (2006). Classic Drucker: Essential wisdom of Peter Drucker from the pages of Harvard Business Review. Harvard Business Review Book.

Cita Chicago (17th ed.)

Drucker, Peter Ferdinand. Classic Drucker: Essential Wisdom of Peter Drucker from the Pages of Harvard Business Review. Boston, Mass: Harvard Business Review Book, 2006.

Cita MLA (9th ed.)

Drucker, Peter Ferdinand. Classic Drucker: Essential Wisdom of Peter Drucker from the Pages of Harvard Business Review. Harvard Business Review Book, 2006.