@book{75060,
	author = {Elliott, C. Orville and Wasley, Robert S.},
	title = {Business information processing systems},
	publisher = {R. D. Irwin},
	year = {1971.},
	series = {Irwin series in quantitative analysis for business},
	address = {Homewood, Ill.},
	edition = {3th ed.}
}