6 1 50 opportunities and challenges of mobile research methodologies Daniele Toninelli Primary Author Robert Pinter Additional Author Pablo de Pedraza Additional Author mixed material 9781909188549 London Ubiquity Press Ltd 2015 A Skill Building Approach Uma Sekaran Primary Author mixed material 9780471618898 New York John Willey 1992 Mark Saunders (et.all) Primary Author mixed material 9780273658047 England Pearson Educations 2003 A Skill Building Approach ed.5 Roger Bougie Primary Author Uma Sekaran Primary Author mixed material 9780470744796 United Kingdom Wiley 2010 a skill-building approach ed.4 Uma Sekaran Primary Author mixed material 9780471203667 New York John Wiley r Sons 2003 LANGDRIDGE,darren Primary Author mixed material 9780130978325 England Pearson 2004