Schnell, R., & Naock, M. (2014). The Accuracy of Pre-Election Polling of German General Elections. Methoden, Daten, Analysen : MDA : Zeitschrift für empirische Sozialforschung.
Cita Chicago (17th ed.)Schnell, Rainer, i Marcel Naock. "The Accuracy of Pre-Election Polling of German General Elections." Methoden, Daten, Analysen : MDA : Zeitschrift Für Empirische Sozialforschung 2014.
Cita MLA (8th ed.)Schnell, Rainer, i Marcel Naock. "The Accuracy of Pre-Election Polling of German General Elections." Methoden, Daten, Analysen : MDA : Zeitschrift Für Empirische Sozialforschung, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.