Some References
Babbie, Earl (2002), The Basics of Social Research 2nd ed. Wadsworth Thomson Learning: CA.
Dillman, D.A. (2000), Mail and Internet Surveys 2nd ed. Wiley: NY.
Fink, Arlene and Jacqueline Kosecoff (1998), How to Conduct Surveys. Sage: CA.
Fowler, Floyd J. (1993), Survey Research Methods. Sage: CA.
Fowler, Floyd J. (1995), Improving Survey Questions. Sage: CA.
Sudman, Seymour and Bradburn, Norman (1982), A Practical Guide to Questionnaire Design. Jossey-Bass: San Francisco.
Tourangeau, R., and Smith, T.W. (1996), “Asking Senstive Questions: The Impact of Data Collection Mode, Question Format, and Question Context, “ Public Opinion Quarterly, 60:275-304.
Also see American Association of Public Opinion Research, “Best Practices for Survey and Public Opinion Research.” http://www.aapor.org/ethics/best.html