@book{16824,
	author = {Jackson, Sherri L.,},
	title = {Research methods and statistics :},
	publisher = {Cengage learning ,},
	year = {c2016},
	address = {Austraria :},
	edition = {5th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1510/2014949577-b.html}
}