Singer E, van Hoewyk J, Maher MP. Does the payment of incentives create expectation effects? Public Opinion Quarterly 1998; 62: 152-164
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Singer, E., van Hoewyk, J. & Maher, M. P. (1998). Does the payment of incentives create expectation effects? Public Opinion Quarterly, 62, 152-164.
(xsd:string)
Singer, E., Hoewyk, J., Maher, M. P. (1998). Does the payment of incentives create expectation effects?. Public Opinion Quarterly, 62 pp. 152-164.
(xsd:string)