6Bracke, M. S. et al. Finding information in a new landscape: de-veloping new service and staffing models for mediated information services[J]. College & Research Libraries. 2007,68 ( 3 ) : 248 - 267.
8Matthew P. Long, Roger C. Schonfeld. Ithaka S + R library survey 2010 : Insights from U. S. academic library directors[ EB/OL]. ht- tp ://www. sr. ithaka, org/research - publications/ithaka - sr - us - library - survey - 2013. [ 2015 - 04 - 18 ].
9Purcell K. Search and email still top the list of most popular online activities [ J ]. Pew Internet & American Life Project, 2011 (9) :1 -15.
10Hodges, D. ; Preston,C. ; Hamilton M.J. Patron- initiated collection development: Progress of a paradigm shift[ J ]. Collection Management ,2010 ( 35 ) :208 - 221.