APA (7th ed.) Citation

Luther, W. M. (2001). The marketing plan: How to prepare and implement it (3rd ed.). AMACOM.

Chicago Style (17th ed.) Citation

Luther, William M. The Marketing Plan: How to Prepare and Implement It. 3rd ed. New York: AMACOM, 2001.

MLA (9th ed.) Citation

Luther, William M. The Marketing Plan: How to Prepare and Implement It. 3rd ed. AMACOM, 2001.