APA (7th ed.) Citation

Drucker Peter Ferdinand. (1980). Managing in turbulent times. HArper & Row.

Chicago Style (17th ed.) Citation

Drucker Peter Ferdinand. Managing in Turbulent Times. London: HArper & Row, 1980.

MLA (8th ed.) Citation

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

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