@book{154224,
	author = {Lipschutz, Seymour. and Schiller, John J.},
	title = {Schaum's outline of theory and problems of beginning finite mathematics /},
	publisher = {McGraw-Hill,},
	year = {2005.},
	series = {Schaum's outlines},
	address = {New Delhi},
	note = {Includes index.}
}