GIEGOLD, W. C. (1978). Management by objectives. McGraw Hill.
Chicago Style aipamenaGIEGOLD, William C. Management by Objectives. New York: McGraw Hill, 1978.
MLA aipamenaGIEGOLD, William C. Management by Objectives. McGraw Hill, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.