@book{1824,
	author = { Purves,William K. and Purves, William K.},
	title = {Life :},
	publisher = {Macmillan Education Australia,},
	year = {1987.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0878937331/chopaconline-20}
}