An incentive test

von Yelding, David J.
Veröffentlicht in Market Research Society Journal of the Market Research Society (1973)

The consumer and the policy-maker: survey research to serve both

von Warren, Michael
Veröffentlicht in European Society for Opinion and Marketing Research Esomar congress (1982)

Caring for someone with AIDS : [a clear, practical guide for people coping with AIDS, including where to go for information and support]

Veröffentlicht 1990