@book{54012,
	author = {Nolt, John and Rohatyn, Dennis A.},
	title = {Schaum's outline of theory and problems of logic /},
	publisher = {McGraw-Hill,},
	year = {c1998},
	series = {Schaum's outline series},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/mh022/98028482.html}
}