Lua APA (7ú heag.)

Kerlinger , F. N. (1979). Behavioral Research: A conceptual approach (ed.). Holt, Rinehart and Winston.

Lua i Stíl Chicago (17ú heag.)

Kerlinger , Fred N. Behavioral Research: A Conceptual Approach. ed. New York: Holt, Rinehart and Winston, 1979.

Lua MLA (9ú heag.)

Kerlinger , Fred N. Behavioral Research: A Conceptual Approach. ed. Holt, Rinehart and Winston, 1979.

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