@book{206344,
	author = {Ryan, Thomas P.,},
	title = {Sample size determination and power /},
	publisher = {John Wiley & Sons,},
	year = {©2013.},
	series = {Wiley series in probability and statistics},
	address = {Hoboken, N.J. :},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118439241}
}