@book{6719,
	author = {Cisco},
	title = {CCNA 1 and 2 Companion Guide},
	publisher = {Cisco Press},
	year = {2004},
	address = {India},
	url = {https://libgen.is/book/index.php?md5=2FC5EC8EE7E294B3881289C564388F38}
}