Lua APA (7ú heag.)

Cozby, P. C. (2004). Methods in behavioral research (8th ed.). McGraw- Hill.

Lua i Stíl Chicago (17ú heag.)

Cozby, Paul C. Methods in Behavioral Research. 8th ed. New York: McGraw- Hill, 2004.

Lua MLA (9ú heag.)

Cozby, Paul C. Methods in Behavioral Research. 8th ed. McGraw- Hill, 2004.

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