Schuman, H., & Fresser, S. (1981). Questions and answers in attitude surveys: Experiments on question form, wording, and contetext. Academic Press.
Chicago-referens (17:e uppl.)Schuman, Howard, och Stanlley Fresser. Questions and Answers in Attitude Surveys: Experiments on Question Form, Wording, and Contetext. Academic Press, 1981.
MLA-referens (8:e uppl.)Schuman, Howard, och Stanlley Fresser. Questions and Answers in Attitude Surveys: Experiments on Question Form, Wording, and Contetext. Academic Press, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.