@book{5317,
	author = {Hungerford, Thomas W.},
	title = {Contemporary Trigonometry : a graphing approach},
	publisher = {Cengage Learning,},
	year = {2005.},
	address = {[S.l.] :},
	edition = {1st ed.},
	url = {http://10.10.170.122:8080/browse/book/22633}
}