Gaya APA
Chapple, M. (2003).
The GSEC prep guide : mastering SANS GIAC security essentials .
Indianapolis:
Wiley Publishing, Inc..
Gaya MLA
Chapple, Mike.
"The GSEC prep guide : mastering SANS GIAC security essentials".
Indianapolis:
Wiley Publishing, Inc.,
2003.
Compact Disk.