@book{7779,
	author = {Larson, Ron, and Hostetler, Robert P.},
	title = {Trigonometry.},
	publisher = {Houghton Mifflin,},
	year = {c2014.},
	address = {Boston :},
	edition = {8th ed. /},
	note = {Includes indexes.},
	url = {http://www.loc.gov/catdir/enhancements/fy1302/00103028-b.html}
}