A few methodology references added by Katherine Isbister, March 29, 2003.
Campbell, D.T. & Stanley, J.C. 1963. Experimental and Quasi-Experimental Designs for Research. Boston: Houghton Mifflin Company.
Carmines, E.G. & Zeller, R.A. 1979. Reliability and Validity Assessment. Newbury Park: Sage Publications.
McIver, J.P. & Carmines, E.G. 1981. Unidimensional Scaling. Newbury Park: Sage Publications.
Singer, E. & Presser, S. 1989. Survey Research Methods: A Reader. Chicago: The University of Chicago Press.
Stempel, G.H. & Westley, B.H. 1989. Research Methods in Mass Communication. New Jersey: Prentice Hall.
Sudman, S. & Bradburn, N.M. 1982. Asking Questions: A Practical Guide to Questionnaire Design. San Francisco: Jossey-Bass Publishers.
Weiss, A.J. & Leets, L.L. 1998. Introduction to Statistics for the Social Sciences. New York: The McGraw-Hill Companies, Inc.


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