Kerlinger, F. N. (1979). Behavioral research: A conceptual approach. Holt, Rinehart and Winston.
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Chicago-čujuhus (17. p.)
Kerlinger, Fred N. Behavioral Research: A Conceptual Approach. New York: Holt, Rinehart and Winston, 1979.
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MLA-čujuhus (9. p.)
Kerlinger, Fred N. Behavioral Research: A Conceptual Approach. Holt, Rinehart and Winston, 1979.
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