Cita APA (7a ed.)

Gucer, V. (2007). Certification guide series. IBM, International Technical Support Organization.

Cita Chicago Style (17a ed.)

Gucer, Vasfi. Certification Guide Series. [Poughkeepsie, N.Y.]: IBM, International Technical Support Organization, 2007.

Cita MLA (8a ed.)

Gucer, Vasfi. Certification Guide Series. IBM, International Technical Support Organization, 2007.