Gaya APA
Hancock, G. (2000).
CCNA Cisco Certified network administrator study guide, 2nd.ed. (Exam 640-507) .
Boston:
Osborne/ McGraw-Hill.
Gaya MLA
Hancock, Gareth.
"CCNA Cisco Certified network administrator study guide, 2nd.ed. (Exam 640-507)".
Boston:
Osborne/ McGraw-Hill,
2000.
Text.