APA (7th ed.) Citation

Drucker, P. F. (1980). Managing in turbulent times. Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Drucker, Peter Ferdinand. Managing in Turbulent Times. Oxford: Butterworth-Heinemann, 1980.

MLA (8th ed.) Citation

Drucker, Peter Ferdinand. Managing in Turbulent Times. Butterworth-Heinemann, 1980.