(2011). Mobile applications stores 2012 North America, market analysis and business assessment. [electronic resource].
Cita Chicago (17th ed.)Mobile Applications Stores 2012 North America, Market Analysis and Business Assessment. [electronic Resource]. 2011.
Cita MLA (9th ed.)Mobile Applications Stores 2012 North America, Market Analysis and Business Assessment. [electronic Resource]. 2011.
Atenció: Aquestes cites poden no estar 100% correctes.