[ 1 ] ZICKUHR K, RAINIE L, PURCELL K. YoungerAmericans’ Library Habits and Expectations [EB/OL]. [2014-08-09]. http: //libraries. pewinternet.org/2013/06/25/younger-americans-libraryservices/.[ 2 ] SENDZE M, VAN COURT L. Own Your Own Ebook Lending Service [EB/OL]. [2014-08-11]. http: //www. infotoday.com/cilmag/sep13/Sendze_Van-Court-Own-Your-Own-Ebook-Lending-Service.shtml.[ 3 ] HAZARD OWEN L. Ebooks made up 20% of the U. S. consumer book industry in 2012, up from 15% in 2011[EB/OL]. [2014-08-09]. https: //gigaom.com/2013/05/14/ebooks-made-up-20-of-the-u-sconsumer-book-industry-in-2012-up-from-15-in-2011/.[ 4 ] GREENFIELD J. More Americans Now Reading Ebooks, New Pew Data Show [EB/OL]. [2014-08-11]. http: //www. digitalbookworld. com/2014/moreamericans-now-reading-ebooks-new-pew-datashow/.[ 5 ] American Library Association: 90% of Libraries in U. S. Now Lend Ebooks [EB/OL]. [2014-08-16].http: //www. digitalbookworld. com/2014/americanlibrary-association-90-of-libraries-in-u-s-nowlend-ebooks/.[ 6 ] s p o l a n k a . D o u g l a s C o u n t y L i b r a r i e s a d d s10, 000 titles from Smashwords [EB/OL]. [2014-08-16]. http://www. libraries. wright. edu/noshelfrequired/2013/01/07/douglas-countylibraries-adds-10000-titles-from-smashwords/.[ 7 ] KELLEY M. Douglas County Libraries StrikesNew Deals With Publishers to Own Ebooks [EB/OL]. [2014-08-11]. http: //www. thedigitalshift.com/2011/10/ebooks/douglas-county-librariesstrikes-new-deals-with-publishers-to-ownebooks/.[ 8 ] KELLEY M. Douglas County Libraries Erects Legal Framework for Ebook Purchases, With Assist From Mary Minow[EB/OL]. [2014-10-11]. http: //www. thedigitalshift.com/2012/01/ebooks/douglascounty-library-erects-legal-framework-for-ebookpurchases-with-assist-from-mary-minow/.[ 9 ] ENIS M. Momentum Builds for DCL’s eBook Model[EB/OL]. [2014-08-18]. http: //www. thedigitalshift.com/2012/05/ebooks/momentum-builds-for-dclsebook-model/.[10] KREGER C. Califa Launches Enki, a Lending Platform for Direct Ebook Distribution [EB/OL]. [2014-08-19]. http: //evoke. cvlsites.org/2013/05/20/califa-launches-enki-a-lendingplatform-for-direct-ebook-distribution/.[11] 谢蓉. 图书馆电子书服务模式研究 [J]. 图书馆杂志, 2013 (11): 77-82.[12] KELLEY M. Califa Lands $325, 000 in Funding for Ebook Ownership Project;Deal Close WithSmashwords [EB/OL]. [2014-08-20]. http: //www.thedigitalshift. com/2012/06/ebooks/califa-lands-325000-in-funding-for-ebook-ownership-projectdeal-close-with-smashwords/.[13] “免费借阅”能否激活电子书市场[ E B / O L ] .[2014-09-02]. http: //tech. sina. com. cn/it/2014-10-24/01199726552. shtml.