Schwarz, N., & Hippler, H. J. (1995). The numeric values of rating scales: A comparison of their impact in mail surveys and telephone interviews. International Journal of Public Opinion Research, 7, 72-74.
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Schwarz, N., & Hippler, H.-J. (1995). The numeric values of rating scales: A comparison of their impact in mail surveys and telephone interviews. International Journal of Public Opinion Research, 7(1), 72-74.
(xsd:string)
Schwarz, N., Hippler, H. J. (1995). The numeric values of rating scales: A comparison of their impact in mail surveys and telephone interviews. International Journal of Public Opinion Research, 7(1), pp. 72-74.
(xsd:string)