Powell, G. R., Groves, S., & Dimos, J. (2011). ROI of $ocial media: How to improve the return on your social marketing investment. John Wiley & Sons (Asia).
芝加哥风格引文Powell, Guy R., Steven Groves, 与 Jerry Dimos. ROI of $ocial Media: How to Improve the Return on Your Social Marketing Investment. Singapore: John Wiley & Sons (Asia), 2011.
MLA引文Powell, Guy R., et al. ROI of $ocial Media: How to Improve the Return on Your Social Marketing Investment. John Wiley & Sons (Asia), 2011.
警告：这些引文格式不一定是100％准确.