APA (7th ed.) Citation

Luther, W. M. (2011). The marketing plan: How to prepare and implement it (4th ed.). AMACOM.

Chicago Style (17th ed.) Citation

Luther, William M. The Marketing Plan: How to Prepare and Implement It. 4th ed. New York, NY: AMACOM, 2011.

MLA (8th ed.) Citation

Luther, William M. The Marketing Plan: How to Prepare and Implement It. 4th ed. AMACOM, 2011.