Spafford, G. (2009). Greening the data center: Opportunities for improving data center energy efficiency. IT Governance Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpafford, George. Greening the Data Center: Opportunities for Improving Data Center Energy Efficiency. Ely, U.K.: IT Governance Pub., 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSpafford, George. Greening the Data Center: Opportunities for Improving Data Center Energy Efficiency. IT Governance Pub., 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.