Cita APA (7a ed.)

Drucker, P. F. (1993). Management: Tasks, responsabilities, practices. Harper Business.

Cita Chicago Style (17a ed.)

Drucker, Peter F. Management: Tasks, Responsabilities, Practices. New York: Harper Business, 1993.

Cita MLA (8a ed.)

Drucker, Peter F. Management: Tasks, Responsabilities, Practices. Harper Business, 1993.