@book{4637,
	author = {Norman, Geoffrey R., and Streiner, David L.,},
	title = {Biostatistics :},
	publisher = {People's Medical Publishing House,},
	year = {2014.},
	address = {Shelton, Connecticut :},
	edition = {Fourth edition.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10949549}
}