APA stil citiranja

Spencer, H. (1870). The principles of psychology: The principles of psychology. Vol. 1 The principles of psychology.

Chicago stil citiranja

Spencer, Herbert. "The principles of psychology: The principles of psychology. Vol. 1." 1870.

MLA stil citiranja

Spencer, Herbert. "The principles of psychology: The principles of psychology. Vol. 1." 1870.

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