@book{6813,
	author = {Cunningham, Donald H. and Pearsall, Thomas E.},
	title = {How to write for the world of work,  seventh edition /},
	publisher = {Thomson / Wadsworth,},
	year = {2007.},
	address = {[S.l.] :},
	edition = {7th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1413001947/chopaconline-20}
}