@book{13134,
	author = {D., William Anthony Granville Ph.},
	title = {Plane and spherical trigonometry :},
	publisher = {CreateSpace Independent Publishing Platform,},
	year = {2015.},
	address = {[S.l.] :},
	edition = {First Edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1505945224/chopaconline-20}
}