@book{24459,
	author = {Gregory, Robert H. and Van Horn, Richard L.,},
	title = {Automatic data-processing systems :},
	publisher = {Wadsworth Pub. Co.,},
	year = {1963.},
	series = {Wadsworth accounting and data processing series},
	address = {Belmont, Calif. :},
	edition = {2d ed.}
}