APA Citation

 Lammle, T. (2007).  CliffsTestPrep Cisco CCNA.  John Wiley.

Chicago Style Citation

 Lammle, Todd.  CliffsTestPrep Cisco CCNA.  John Wiley, 2007.

MLA Citation

 Lammle, Todd.  CliffsTestPrep Cisco CCNA.  John Wiley, 2007.

Warning: These citations may not always be 100% accurate.