Moser, C. A., & Kalton, G. (1971). Survey methods in social investigation (2nd ed.). Heinemann Educational ; Ashgate.
Cita Chicago (17th ed.)Moser, Claus Adolf, i Graham Kalton. Survey Methods in Social Investigation. 2nd ed. London: Heinemann Educational ; Ashgate, 1971.
Cita MLA (8th ed.)Moser, Claus Adolf, i Graham Kalton. Survey Methods in Social Investigation. 2nd ed. Heinemann Educational ; Ashgate, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.