APA Edition Citation

Harden, L., & Heyman, B. (2011). Marketing by the numbers: How to measure and improve the ROI of any campaign. Amacom.

Chicago Edition Citation

Harden, Leland, and Bob Heyman. Marketing by the Numbers: How to Measure and Improve the ROI of Any Campaign. New York: Amacom, 2011.

MLA Edition Citation

Harden, Leland, and Bob Heyman. Marketing by the Numbers: How to Measure and Improve the ROI of Any Campaign. Amacom, 2011.

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