@book{19013,
	author = {Walker, Matthew. and Walker, Angie.},
	title = {CCENT Cisco Certified Euidentry Networking Technician study guide (exam 640-822) /},
	publisher = {Tata McGraw-Hill,},
	year = {2008.},
	address = {New Delhi },
	note = {Includes glossary and index }
}