Cita APA (7a ed.)

Velte, T., Velte, A., & Elsenpeter, R. (2008). Green IT: Reduce your information system's environmental impact while adding to the bottom line. McGraw-Hill.

Cita Chicago Style (17a ed.)

Velte, Toby, Anthony Velte, y Robert Elsenpeter. Green IT: Reduce Your Information System's Environmental Impact While Adding to the Bottom Line. [S.l.]: McGraw-Hill, 2008.

Cita MLA (9a ed.)

Velte, Toby, et al. Green IT: Reduce Your Information System's Environmental Impact While Adding to the Bottom Line. McGraw-Hill, 2008.