Sellitz, C. (1976). Research methods in social relations (3rd. ed.). Holt, Rinehart and winston.
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Chicago-čujuhus (17. p.)
Sellitz, Claire. Research Methods in Social Relations. 3rd. ed. Chicago: Holt, Rinehart and winston, 1976.
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MLA-čujuhus (9. p.)
Sellitz, Claire. Research Methods in Social Relations. 3rd. ed. Holt, Rinehart and winston, 1976.
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