Weisberg, H. F., Bowen, B. D., Krosnick, J. A., & Krosnick, J. A. (1996). An introduction to survey research, polling, and data analysis (3rd ed.). Thousand Oaks, Calif: Sage Publications.
Παραπομπή Chicago StyleWeisberg, Herbert F., Bruce D. Bowen, Jon A. Krosnick, and Jon A. Krosnick. An Introduction to Survey Research, Polling, and Data Analysis. 3rd ed. Thousand Oaks, Calif: Sage Publications, 1996.
Παραπομπή MLAWeisberg, Herbert F., Bruce D. Bowen, Jon A. Krosnick, and Jon A. Krosnick. An Introduction to Survey Research, Polling, and Data Analysis. 3rd ed. Thousand Oaks, Calif: Sage Publications, 1996.
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