Drucker, P. F. (1974). Management: Tasks, responsibilities, practices. Heinemann.
Chicago Style aipamenaDrucker, Peter F. Management: Tasks, Responsibilities, Practices. London: Heinemann, 1974.
MLA aipamenaDrucker, Peter F. Management: Tasks, Responsibilities, Practices. Heinemann, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.