@book{16594,
	author = {CISCO and Cisco networking academy.},
	title = {CCNA Exploration: Accessing the WAN 4.0},
	publisher = {Cisco Press,},
	year = {2011.},
	address = {[S.l.] :},
	edition = {1st ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1587}
}