Pierce, T. The business of iOS App Development. For iPhones, iPads and iPod touches [Electronic resource] / T. Pierce, D. Wooldridge. - 3rd ed. - Electronic text data. - New York, NY [etc.] : Apress, 2014. - on-line. - Загл. с экрана. - ISBN 978-1-4302-6239-8 : Б. ц.