@book{4661,
	author = {Layman, Stephen.},
	title = {The power of logic /},
	publisher = {McGraw-Hill Inc.,US,},
	year = {2003.},
	address = {[S.l.] :},
	edition = {3rd International edition.},
	note = {International Edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0071131817/chopaconline-20}
}