@book{4682,
	author = {Bates, Regis "Bud" and Gregory, Donald W.},
	title = {Voice & Data Communications Handbook},
	publisher = {Tata McGraw-Hill },
	year = {2001.},
	address = {New delhi.},
	edition = {4th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0072263350/chopaconline-20}
}