Moser, C. A., & Kalton, G. (1971). Survey methods in social investigation (2nd ed.). Heinemann Educational ; Ashgate.
Chicago-viite (17. p.)Moser, Claus Adolf, ja Graham Kalton. Survey Methods in Social Investigation. 2nd ed. London: Heinemann Educational ; Ashgate, 1971.
MLA-viite (8. p.)Moser, Claus Adolf, ja Graham Kalton. Survey Methods in Social Investigation. 2nd ed. Heinemann Educational ; Ashgate, 1971.
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