Singer, E., J. van Hoewyk und M.P. Maher, 1998: Does the Payment of Incentives Create Ex- pectation Effects? Public Opinion Quarterly 62: 152-164.
(xsd:string)
Singer, E., Hoewyk, J., Maher, M. P. (1998). Does the Payment of Incentives Create Ex- pectation Effects?. Public Opinion Quarterly, 62 pp. 152-164.
(xsd:string)