References
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1
Levine-Clark M Global Trends in eBook Usage: Patterns from 10,000 Libraries
http://go.proquest.com/globalebookusage2015 (accessed 5 June 2015) -
2
Levine-Clark M Paulson K ‘E-Book Usage on a Global Scale: Patterns, Trends, and Opportunities’ UKSG Annual Conference
30 March–1 April 2015 Glasgowhttp://www.slideshare.net/MichaelLevineClark/levineclark-michael-and-kari-paulson-ebook-usage-on-a-global-scale-patterns-trends-and-opportunities-uksg-annual-conference-glasgow-march-30april-1-2015 (accessed 4 May 2015) -
3
International Telecommunications Union Key ICT indicators for developed and developing countries and the world (totals and penetration rates)
http://www.itu.int/en/ITU-D/Statistics/Documents/statistics/2014/ITU_Key_2005-2014_ICT_data.xls (accessed 4 May 2015) -
4
Levine-Clark M Paulson K ref. 2
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5
Levine-Clark M ref. 2