APA (7th ed.) Citation

(1991). Drucker in the harvard business review. A harvard business review paperback.

Chicago Style (17th ed.) Citation

Drucker in the Harvard Business Review. U.S.A: A harvard business review paperback, 1991.

MLA (9th ed.) Citation

Drucker in the Harvard Business Review. A harvard business review paperback, 1991.

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