@book{4645,
	author = {Layman, C. Stephen.},
	title = {By C. stephen layman - the power of logic :},
	publisher = {McGraw-Hill Companies, The,},
	year = {2005.},
	series = {Third.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/B008UZ1YUW/chopaconline-20}
}