Gaya APA

Drucker, P, F. (1999). The frontiers of management: where tomorrow's decisins are being shaped today . New York: Truman Talley Books/Plume.

Gaya MLA

Drucker, Peter, F.. "The frontiers of management: where tomorrow's decisins are being shaped today". New York: Truman Talley Books/Plume, 1999. Text.