44 REFERENCE SOURCES
available since much of the information they provide is subject to
change.
notes
- William A. Katz, Introduction to Reference Work, 8th ed., vol. 1, Basic
Information Services (New York: McGraw-Hill, 2002), 420. - Joan M. Reitz, Dictionary for Library and Information Science (Westport, CT:
Libraries Unlimited, 2004), 438. - Ibid., 49
- Ibid., 308.
- David A. Cobb, “Geographical Sources,” in Reference and Information Services:
An Introduction, 4th ed., ed. Richard E. Bopp and Linda C. Smith (Santa
Barbara, CA: Libraries Unlimited, 2011), 570.
http://www.ebook3000.com