3Griffiths J M,King D,Lynch T.Taxpayer return on investment inflorida public libraries:Summary report. http://dlis.dos.state.fl.us/bld/roi/pdfs/ROISummaryReport.pdf . 2004
4Library Research Service.Return on investment for public libraries. http://www.lrs.org/public/roi . 2009
5Strouse R.Demonstrating value and return on investment:The ongoing imperative[].Information Outlook.2003
6Levin,Driscoll and Fleeter.Value for Money:Southwestern Ohio’’s return from investment in public libraries. http://9libraries.info/docs/EconomicBenefitsStudy.pdf . 2006
7King D.W,Aerni S,Brody F,Herbison M,Knapp A.The use and outcomes of university library print and electronic collections. http://web.utk.edu/-tenopir/research/pitts/Pitt_Use_Final.pdf . 2004
8King D.W,Aerni S,Brody F,Herbison M,Knapp A.Comparative costs of the University of Pittsburgh electronic and print library collections. http://web.utk.edu/-tenopir/research/pitts/Pitt_Cost_Final.pdg . 2004
9Luther J.University investment in the library:what’’s the return?A Case study at the Universityof Illinios at Urbana-Champaign. http://libraryconnect.elsevier.com/whitepapers/0108/lcwp0101.pdf . 2008
10Carol Tenopir,Amy Love,Joseph Park,Lei Wu.University Investment in the Library,Phase II:An International Study of the Library’’s Value to the Grants Process. http://libraryconnect.elsevier.com/whitepapers/roi2/ . 2010
8Ahmed P K, Rafiq. The role of intex'nal marketing in the implementation of marketing strategies. Journal of Marketing Practice Applied Marketing Seienee. 1995, 1 (4) :32 - 51.
9Bernhardt K L, Donthu N, Kennett P A. A longitudinal analysis of satisfaction and profitability. Journal of Business Research, 2000, 47(2) :161 -171.
