@book{51,
	author = {Goldstein, E. Bruce,},
	title = {Sensation and perception /},
	publisher = {Wadsworth-Thomson Learning,},
	year = {c2002.},
	address = {Australia ;},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/2001026542-b.html}
}