@book{123500,
	author = {Best, Roland E. and ebrary, Inc.},
	title = {Phase-locked loops},
	publisher = {McGraw-Hill,},
	year = {c2003.},
	series = {McGraw-Hill professional engineering},
	address = {New York :},
	edition = {5th ed.},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10180030}
}