Cita APA (7a ed.)

Drucker, P. F. (1982). The changing world of the executive. Times Books.

Cita Chicago Style (17a ed.)

Drucker, Peter Ferdinand. The Changing World of the Executive. New York, N.Y: Times Books, 1982.

Cita MLA (9a ed.)

Drucker, Peter Ferdinand. The Changing World of the Executive. Times Books, 1982.