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.
استشهاد بنمط شيكاغوVelte Toby J., Velte Anthony T, و 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 استشهادVelte Toby J., Velte Anthony T, و 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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.