Velte Toby J., Velte Anthony T., & Elsenpeter Robert. (2008). Green IT: Reduce your information system's environmental impact while adding to the bottom line (In lần thứ 1.). American: MC Graw Hill.
शिकागो स्टाइल उद्धरणVelte Toby J., Velte Anthony T, और Elsenpeter Robert. Green IT: Reduce Your Information System's Environmental Impact While Adding to the Bottom Line. In lần thứ 1. American: MC Graw Hill, 2008.
एमएलए उद्धरणVelte Toby J., Velte Anthony T, और Elsenpeter Robert. Green IT: Reduce Your Information System's Environmental Impact While Adding to the Bottom Line. In lần thứ 1. American: MC Graw Hill, 2008.
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