EU online trustmarks building digital confidence in Europe [documento eletrónico] / ed. European Commission
Europe digital future in focus 2013 [documento eletrónico] : key insights from 2012 and what they mean for the coming year / ed. ComScore
Protecting and empowering consumers in the purchase of digital content products [documento eletrónico] / Organisation for Economic co-Operation and Development
Electronic and mobile commerce [documento eletrónico] / Organisation for Economic co-Operation and Development