APA stil citiranja

Spencer, H. (1872). The principles of psychology: The principles of psychology. Vol. 2 The principles of psychology.

Chicago stil citiranja

Spencer, Herbert. "The principles of psychology: The principles of psychology. Vol. 2." 1872.

MLA stil citiranja

Spencer, Herbert. "The principles of psychology: The principles of psychology. Vol. 2." 1872.

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