Gaya APA
Stallings, W., Horton, M. (2011).
Network security essentials : applications and standards (4).
United States Of America:
Pearson Education.
Gaya MLA
Stallings, William., Horton, Marcia.
"Network security essentials : applications and standards".
4
United States Of America:
Pearson Education,
2011.
Text.