Groves, R. M., R. B. Cialdini und M. C. Couper, 1992: Understanding the Decision to Partici- pate in a Survey. Public Opinion Quarterly 56: 475-495.
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Groves, R. M., Cialdini, R. B., Couper, M. C. (1992). Understanding the Decision to Partici- pate in a Survey. Public Opinion Quarterly, 56 pp. 475-495.
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