Lua APA (7ú heag.)

Craig James R. (1986). Methods of Psychological research (2nd ed.). Cole Publ. Co..

Lua i Stíl Chicago (17ú heag.)

Craig James R. Methods of Psychological Research. 2nd ed. California: Cole Publ. Co., 1986.

Lua MLA (9ú heag.)

Craig James R. Methods of Psychological Research. 2nd ed. Cole Publ. Co., 1986.

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