APA (7th ed.) Citation

Drucker. (1988). The effective executive. Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Drucker. The Effective Executive. Oxford: Butterworth-Heinemann, 1988.

MLA (8th ed.) Citation

Drucker. The Effective Executive. Butterworth-Heinemann, 1988.

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