3[3]Karen A. Schmidt. Understanding the Business of Library Acquisitions. Chicago: ALA, 1999
4Karen Commings. Access Over Ownership [J].Computers in Libraries, 1997, 17(4).
5Brin, Beth; Cochran, Elissa. Access and Ownership in the Academic Environment: One Library' s ProgressReport [J]. Journal of Acadenic Librarianship, 1994, 20(4).