1. Open Doors 2006: International Students in the United States;Gardner,2007
2. User Needs: A Synthesis and Analysis of Current Theories for the Practitioner;Westbrook;R.Q.,1993
3. Identifying and Analyzing User Needs: A Complete Handbook and Ready-to-use Assessment Workbook With Disk;Westbrook,2001
4. Ibid., p. 3.
5. Looking for Information: A Survey of Research on Information Seeking, Needs, and Behavior;Case,2002