@book{10959,
	author = {Jackson, Sherri L.},
	title = {Statistics plain and simple /},
	publisher = {Cengage Learning,},
	year = {2009.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0495808903/chopaconline-20}
}