Gaya APA
Hales, A, P, T, L, D, K. (2003).
"CCNP: Cisco Internetwork Troubleshooting (Exam 642-831)| (3).
California:
Sybex.
Gaya MLA
Hales, Arthur, Pfund,, Todd, Lammle,, Dan, Kevin.
""CCNP: Cisco Internetwork Troubleshooting (Exam 642-831)|".
3
California:
Sybex,
2003.
book.