@book{3042,
	author = {Johnsonbaugh, Richard.},
	title = {Discrete mathematics /},
	publisher = {Pearson Prentice Hall,},
	year = {c2005.},
	series = {The JK computer science and mathematics series,},
	address = {Upper Saddle River, N.J. :},
	edition = {6th ed.},
	note = {Includes bibliographical references and index.
}
}