Lua APA (7ú heag.)

Gold, J. A. (1984). Principles of psychological research. Dorsey.

Lua i Stíl Chicago (17ú heag.)

Gold, Joel A. Principles of Psychological Research. Homewood: Dorsey, 1984.

Lua MLA (9ú heag.)

Gold, Joel A. Principles of Psychological Research. Dorsey, 1984.

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