DRUCKER PETER F. (1975). MANAGEMENT: TASKS RESPONSIBILITIES PRACTICES. ALLIED PUBLISHERS.
Chicago Style aipamenaDRUCKER PETER F. MANAGEMENT: TASKS RESPONSIBILITIES PRACTICES. MUMBAI: ALLIED PUBLISHERS, 1975.
MLA aipamenaDRUCKER PETER F. MANAGEMENT: TASKS RESPONSIBILITIES PRACTICES. ALLIED PUBLISHERS, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.