Produkt mají v nabídce:
Asking Questions - Bradburn, Norman M. (University of Chicago) a Sudman, Seymour (University of Illinois) a Wansink, Brian (University of Illinoisnis)
Since it was first published more than twenty-five years ago, Asking Questions has become a classic guide for designing questionnaires the most widely used method for collecting information about people's attitudes and behavior.
