@book{210915,
	author = {Ray, Deborah S. and Ray, Eric J.},
	title = {Unix and Linux /},
	publisher = {Peachpit Press,},
	year = {c2009.},
	series = {Visual quickstart guide},
	address = {Berkeley, CA :},
	edition = {4th ed.},
	note = {Includes index.}
}