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.
Chicago-stil citatVelte Toby J., Velte Anthony T, och 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.
MLA-referensVelte Toby J., Velte Anthony T, och 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.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.