NOBLE, Joshua J. Flex 4 cookbook [elektronický zdroj]. 1st ed. Beijing ; Sebastopol, Calif. : O'Reilly, 2010. 1 online zdroj (xxi, 736 s.). Available on Internet: <http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=431956> ISBN 9781449391232.