Gaya APA

Hancock, G. (2001). CCNP (Cisco Certified network professional) switching study guide (exam 640-504)/ editor Gareth Hancock . Berkeley, CA: McGraw-Hill.

Gaya MLA

Hancock, Gareth. "CCNP (Cisco Certified network professional) switching study guide (exam 640-504)/ editor Gareth Hancock". Berkeley, CA: McGraw-Hill, 2001. Text.