(2010). Marketing by the numbers: How to measure and improve the ROI of any campaign / Leland Harden and Bob Heyman.
芝加哥风格引文Marketing by the Numbers: How to Measure and Improve the ROI of Any Campaign / Leland Harden and Bob Heyman. 2010.
MLA引文Marketing by the Numbers: How to Measure and Improve the ROI of Any Campaign / Leland Harden and Bob Heyman. 2010.
警告：这些引文格式不一定是100％准确.