Kerwin, P., Beatty, D., Herrmann, C., & Puskar, J. (1998). Don't know responses in surveys: Is what I know what you want to know and do I want you to know it?
Chicago-Zitierstil (17. Ausg.)Kerwin, Paul, Douglas Beatty, Cathy Herrmann, und Jeffrey Puskar. Don't Know Responses in Surveys: Is What I Know What You Want to Know and Do I Want You to Know It? 1998.
MLA-Zitierstil (9. Ausg.)Kerwin, Paul, et al. Don't Know Responses in Surveys: Is What I Know What You Want to Know and Do I Want You to Know It? 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.