APA (7th ed.) Zitazioa
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).
Chicago Style (17th ed.) Zitazioa
Powell, Guy R., Steven Groves, eta Jerry Dimos. ROI of $ocial Media: How to Improve the Return on Your Social Marketing Investment. Singapore: John Wiley & Sons (Asia), 2011.
MLA (9th ed.) Zitazioa
Powell, Guy R., et al. ROI of $ocial Media: How to Improve the Return on Your Social Marketing Investment. John Wiley & Sons (Asia), 2011.
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