Gaya APA

Drucker, P, F. (1987). The Frontiers Of Management where tomorrows decisions are being shaped today . USA: Hienemann Professional Publishing Ltd 22 Bedford Square, London wcib 3 hh.

Gaya MLA

Drucker, Peter, F.. "The Frontiers Of Management where tomorrows decisions are being shaped today". USA: Hienemann Professional Publishing Ltd 22 Bedford Square, London wcib 3 hh, 1987. Text.