APA (7th ed.) Citation

Drucker, P. F. (1980). Managing in turbulent times. Harper & Row.

Chicago Style (17th ed.) Citation

Drucker, Peter Ferdinand. Managing in Turbulent Times. New York [etc.]: Harper & Row, 1980.

MLA (9th ed.) Citation

Drucker, Peter Ferdinand. Managing in Turbulent Times. Harper & Row, 1980.

Warning: These citations may not always be 100% accurate.