Bourque, L.B. & E.P. Fielder (1995): How to Conduct Self-Administered and Mail Surveys. Band 3 der Reihe Fink, Arlene (Hrsg.), The Survey Kit. Thousand Oaks, London, New Delhi: Sage Publications Dillman, D.A. (1978): Mail and Telephone Surveys: The Total Design Method. New York: John Wiley & Sons
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Bourque, Linda B.; Fielder, Eve P. (1995): How to Conduct Self-administered and Mail Surveys. Thousand Oaks
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Bourque, L. B., Fielder, E. P. (1995). How to Conduct Self-Administered and Mail Surveys. London, New Delhi: Sage Publications. The Survey Kit. Thousand Oaks, 3.
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