@book{15,
	author = {O'Leary, Timothy J., and O'Leary, Linda I.},
	title = {Computing essentials 2008 /},
	publisher = {McGraw-Hill/Irwin,},
	year = {c2008.},
	series = {O'Leary series},
	address = {Boston :},
	edition = {Introductory ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip076/2006100097.html}
}