Bradburn, N. M., Sudman, S., Wansink, B., & ebrary, I. (2004). Asking questions: The definitive guide to questionnaire design : for market research, political polls, and social and health questionnaires (Rev. ed.). San Francisco: Jossey-Bass.MLA Citation
Bradburn, Norman M., Seymour Sudman, Brian Wansink, and Inc ebrary. Asking Questions: The Definitive Guide to Questionnaire Design : For Market Research, Political Polls, and Social and Health Questionnaires. Rev. ed. San Francisco: Jossey-Bass, 2004.