DRUCKER , P. (1991). THE PRACTICE OF MANAGEMENT. ALLIED PUB.
Chicago Style aipamenaDRUCKER , P.F. THE PRACTICE OF MANAGEMENT. AHMEDABAD: ALLIED PUB, 1991.
MLA aipamenaDRUCKER , P.F. THE PRACTICE OF MANAGEMENT. ALLIED PUB, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.