Cita APA

Drucker, P. F. 1., & Drucker, P. F. 1. (1980). Managing in turbulent times. New York, New York: Harper and Row.

Citación estilo Chicago

Drucker, Peter Ferdinand 1909-2005, y Peter Ferdinand 1909-2005 Drucker. Managing in Turbulent Times. New York, New York: Harper and Row, 1980.

Cita MLA

Drucker, Peter Ferdinand 1909-2005, y Peter Ferdinand 1909-2005 Drucker. Managing in Turbulent Times. New York, New York: Harper and Row, 1980.