Cita APA

 Smith, R. W. (2007).  Linux administrator street smarts: A real world guide to Linux certification skills.  John Wiley.

Chicago Style Citation

 Smith, Roderick W.  Linux Administrator Street Smarts: A Real World Guide to Linux Certification Skills.  John Wiley, 2007.

Cita MLA

 Smith, Roderick W.  Linux Administrator Street Smarts: A Real World Guide to Linux Certification Skills.  John Wiley, 2007.