Asking Questions: The Definitive Guide to Questionnaire Design -- For Market Research, Political Polls, and Social and Health QuestionnairesBradburn, Norman M.35,20€
Performance Evaluation: Proven Approaches for Improving Program and Organizational PerformanceGuerra-López, Ingrid J.72,50€
Program Evaluation in Practice: Core Concepts and Examples for Discussion and AnalysisSpaulding, Dean T.63,45€